156949994 has 16 divisors (see below), whose sum is σ = 250015680. Its totient is φ = 73684800.

The previous prime is 156949913. The next prime is 156949997. The reversal of 156949994 is 499949651.

It is not an unprimeable number, because it can be changed into a prime (156949997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13982 + ... + 22569.

It is an arithmetic number, because the mean of its divisors is an integer number (15625980).

Almost surely, 2^156949994 is an apocalyptic number.

156949994 is a deficient number, since it is larger than the sum of its proper divisors (93065686).

156949994 is a wasteful number, since it uses less digits than its factorization.

156949994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36685.

The product of its digits is 3149280, while the sum is 56.

The square root of 156949994 is about 12527.9684705861. The cubic root of 156949994 is about 539.4117897779.

The spelling of 156949994 in words is "one hundred fifty-six million, nine hundred forty-nine thousand, nine hundred ninety-four".