157198868 has 6 divisors (see below), whose sum is σ = 275098026. Its totient is φ = 78599432.

The previous prime is 157198849. The next prime is 157198871. The reversal of 157198868 is 868891751.

It can be written as a sum of positive squares in only one way, i.e., 146361604 + 10837264 = 12098^2 + 3292^2 .

It is a super-2 number, since 2×157198868² = 49422968200962848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19649855 + ... + 19649862.

It is an arithmetic number, because the mean of its divisors is an integer number (45849671).

Almost surely, 2^157198868 is an apocalyptic number.

It is an amenable number.

157198868 is a deficient number, since it is larger than the sum of its proper divisors (117899158).

157198868 is a wasteful number, since it uses less digits than its factorization.

157198868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39299721 (or 39299719 counting only the distinct ones).

The product of its digits is 967680, while the sum is 53.

The square root of 157198868 is about 12537.8972718714. The cubic root of 157198868 is about 539.6967524625.

The spelling of 157198868 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, eight hundred sixty-eight".