1345157244 has 18 divisors (see below), whose sum is σ = 3400258680. Its totient is φ = 448385736.

The previous prime is 1345157243. The next prime is 1345157263. The reversal of 1345157244 is 4427515431.

1345157244 is a `hidden beast` number, since 1 + 3 + 45 + 1 + 572 + 44 = 666.

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

It is a super-2 number, since 2×1345157244² = 3618896022171351072, which contains 22 as substring.

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: 37365479 = 1345157244 / (1 + 3 + 4 + 5 + 1 + 5 + 7 + 2 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 1345157199 and 1345157208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345157243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18682704 + ... + 18682775.

It is an arithmetic number, because the mean of its divisors is an integer number (188903260).

Almost surely, 2^1345157244 is an apocalyptic number.

It is an amenable number.

1345157244 is an abundant number, since it is smaller than the sum of its proper divisors (2055101436).

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

1345157244 is a wasteful number, since it uses less digits than its factorization.

1345157244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37365489 (or 37365484 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 1345157244 is about 36676.3853726073. The cubic root of 1345157244 is about 1103.8863206042.

The spelling of 1345157244 in words is "one billion, three hundred forty-five million, one hundred fifty-seven thousand, two hundred forty-four".