156835013 has 4 divisors (see below), whose sum is σ = 166060620. Its totient is φ = 147609408.

The previous prime is 156834991. The next prime is 156835031. The reversal of 156835013 is 310538651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310538651 = 79 ⋅3930869.

It can be written as a sum of positive squares in 2 ways, for example, as 125843524 + 30991489 = 11218^2 + 5567^2 .

It is a cyclic number.

It is not a de Polignac number, because 156835013 - 2¹⁶ = 156769477 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 (156835033) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4612778 + ... + 4612811.

It is an arithmetic number, because the mean of its divisors is an integer number (41515155).

Almost surely, 2^156835013 is an apocalyptic number.

It is an amenable number.

156835013 is a deficient number, since it is larger than the sum of its proper divisors (9225607).

156835013 is an equidigital number, since it uses as much as digits as its factorization.

156835013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9225606.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 156835013 is about 12523.3786575349. The cubic root of 156835013 is about 539.2800338869.

The spelling of 156835013 in words is "one hundred fifty-six million, eight hundred thirty-five thousand, thirteen".