156993694 has 64 divisors (see below), whose sum is σ = 294658560. Its totient is φ = 61672320.

The previous prime is 156993679. The next prime is 156993721. The reversal of 156993694 is 496399651.

156993694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 907392 + ... + 907564.

It is an arithmetic number, because the mean of its divisors is an integer number (4604040).

Almost surely, 2^156993694 is an apocalyptic number.

156993694 is a deficient number, since it is larger than the sum of its proper divisors (137664866).

156993694 is a wasteful number, since it uses less digits than its factorization.

156993694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its digits is 1574640, while the sum is 52.

The square root of 156993694 is about 12529.7124468202. The cubic root of 156993694 is about 539.4618484137.

The spelling of 156993694 in words is "one hundred fifty-six million, nine hundred ninety-three thousand, six hundred ninety-four".