1345023500 has 24 divisors (see below), whose sum is σ = 2937532416. Its totient is φ = 538009200.

The previous prime is 1345023497. The next prime is 1345023517. The reversal of 1345023500 is 53205431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344524 + ... + 1345523.

It is an arithmetic number, because the mean of its divisors is an integer number (122397184).

Almost surely, 2^1345023500 is an apocalyptic number.

1345023500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345023500 is an abundant number, since it is smaller than the sum of its proper divisors (1592508916).

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

1345023500 is a wasteful number, since it uses less digits than its factorization.

1345023500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690066 (or 2690054 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 1345023500 is about 36674.5620287414. The cubic root of 1345023500 is about 1103.8497342829.

Adding to 1345023500 its reverse (53205431), we get a palindrome (1398228931).

The spelling of 1345023500 in words is "one billion, three hundred forty-five million, twenty-three thousand, five hundred".