389018157 has 16 divisors (see below), whose sum is σ = 599130432. Its totient is φ = 221899520.

The previous prime is 389018143. The next prime is 389018197. The reversal of 389018157 is 751810983.

It is a cyclic number.

It is not a de Polignac number, because 389018157 - 2⁸ = 389017901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389018117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346158 + ... + 347279.

It is an arithmetic number, because the mean of its divisors is an integer number (37445652).

Almost surely, 2^389018157 is an apocalyptic number.

It is an amenable number.

389018157 is a deficient number, since it is larger than the sum of its proper divisors (210112275).

389018157 is a wasteful number, since it uses less digits than its factorization.

389018157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693468.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 389018157 is about 19723.5432161668. The cubic root of 389018157 is about 730.0007237123. Note that the first 3 decimals are identical.

The spelling of 389018157 in words is "three hundred eighty-nine million, eighteen thousand, one hundred fifty-seven".