157713613 has 4 divisors (see below), whose sum is σ = 159187680. Its totient is φ = 156239548.

The previous prime is 157713601. The next prime is 157713643. The reversal of 157713613 is 316317751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316317751 = 6947 ⋅45533.

It is a cyclic number.

It is not a de Polignac number, because 157713613 - 2⁵ = 157713581 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 (157713643) 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, 736873 + ... + 737086.

It is an arithmetic number, because the mean of its divisors is an integer number (39796920).

Almost surely, 2^157713613 is an apocalyptic number.

It is an amenable number.

157713613 is a deficient number, since it is larger than the sum of its proper divisors (1474067).

157713613 is a wasteful number, since it uses less digits than its factorization.

157713613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474066.

The product of its digits is 13230, while the sum is 34.

The square root of 157713613 is about 12558.4080599414. The cubic root of 157713613 is about 540.2851865797.

The spelling of 157713613 in words is "one hundred fifty-seven million, seven hundred thirteen thousand, six hundred thirteen".