1153657013 has 4 divisors (see below), whose sum is σ = 1153816620. Its totient is φ = 1153497408.

The previous prime is 1153657007. The next prime is 1153657051. The reversal of 1153657013 is 3107563511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193710724 + 959946289 = 13918^2 + 30983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153657013 - 2⁴ = 1153656997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153653013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68420 + ... + 83597.

It is an arithmetic number, because the mean of its divisors is an integer number (288454155).

Almost surely, 2^1153657013 is an apocalyptic number.

It is an amenable number.

1153657013 is a deficient number, since it is larger than the sum of its proper divisors (159607).

1153657013 is an equidigital number, since it uses as much as digits as its factorization.

1153657013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159606.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 1153657013 is about 33965.5268323634. The cubic root of 1153657013 is about 1048.7989329288.

The spelling of 1153657013 in words is "one billion, one hundred fifty-three million, six hundred fifty-seven thousand, thirteen".