157099613 has 4 divisors (see below), whose sum is σ = 171381408. Its totient is φ = 142817820.

The previous prime is 157099609. The next prime is 157099633. The reversal of 157099613 is 316990751.

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.

It is a cyclic number.

It is not a de Polignac number, because 157099613 - 2² = 157099609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157099603) 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, 7140881 + ... + 7140902.

It is an arithmetic number, because the mean of its divisors is an integer number (42845352).

Almost surely, 2^157099613 is an apocalyptic number.

It is an amenable number.

157099613 is a deficient number, since it is larger than the sum of its proper divisors (14281795).

157099613 is a wasteful number, since it uses less digits than its factorization.

157099613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14281794.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 157099613 is about 12533.9384472719. The cubic root of 157099613 is about 539.5831407893.

The spelling of 157099613 in words is "one hundred fifty-seven million, ninety-nine thousand, six hundred thirteen".