153868513 has 6 divisors (see below), whose sum is σ = 163452326. Its totient is φ = 144817152.

The previous prime is 153868499. The next prime is 153868523. The reversal of 153868513 is 315868351.

153868513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 87478609 + 66389904 = 9353^2 + 8148^2 .

It is a de Polignac number, because none of the positive numbers 2^k-153868513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153868523) 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, 265920 + ... + 266497.

Almost surely, 2^153868513 is an apocalyptic number.

It is an amenable number.

153868513 is a deficient number, since it is larger than the sum of its proper divisors (9583813).

153868513 is an equidigital number, since it uses as much as digits as its factorization.

153868513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532451 (or 532434 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 153868513 is about 12404.3747524815. The cubic root of 153868513 is about 535.8582468857.

The spelling of 153868513 in words is "one hundred fifty-three million, eight hundred sixty-eight thousand, five hundred thirteen".