157694018 has 8 divisors (see below), whose sum is σ = 236660940. Its totient is φ = 78807040.

The previous prime is 157693951. The next prime is 157694041. The reversal of 157694018 is 810496751.

It can be written as a sum of positive squares in 2 ways, for example, as 150970369 + 6723649 = 12287^2 + 2593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14783 + ... + 23106.

Almost surely, 2^157694018 is an apocalyptic number.

157694018 is a deficient number, since it is larger than the sum of its proper divisors (78966922).

157694018 is a wasteful number, since it uses less digits than its factorization.

157694018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39972.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 157694018 is about 12557.6278810928. The cubic root of 157694018 is about 540.2628098880.

The spelling of 157694018 in words is "one hundred fifty-seven million, six hundred ninety-four thousand, eighteen".