1345724532 has 18 divisors (see below), whose sum is σ = 3401692658. Its totient is φ = 448574832.

The previous prime is 1345724531. The next prime is 1345724543. The reversal of 1345724532 is 2354275431.

1345724532 is a `hidden beast` number, since 1 + 34 + 572 + 4 + 53 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 956293776 + 389430756 = 30924^2 + 19734^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 37381237 = 1345724532 / (1 + 3 + 4 + 5 + 7 + 2 + 4 + 5 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345724531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18690583 + ... + 18690654.

Almost surely, 2^1345724532 is an apocalyptic number.

1345724532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1345724532 is an abundant number, since it is smaller than the sum of its proper divisors (2055968126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1345724532 is a wasteful number, since it uses less digits than its factorization.

1345724532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37381247 (or 37381242 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 1345724532 is about 36684.1182529988. The cubic root of 1345724532 is about 1104.0414780415.

Adding to 1345724532 its reverse (2354275431), we get a palindrome (3699999963).

The spelling of 1345724532 in words is "one billion, three hundred forty-five million, seven hundred twenty-four thousand, five hundred thirty-two".