157019866 has 8 divisors (see below), whose sum is σ = 235636020. Its totient is φ = 78474528.

The previous prime is 157019851. The next prime is 157019887. The reversal of 157019866 is 668910751.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129299641 + 27720225 = 11371^2 + 5265^2 .

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

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11761 + ... + 21268.

Almost surely, 2^157019866 is an apocalyptic number.

157019866 is a deficient number, since it is larger than the sum of its proper divisors (78616154).

157019866 is a wasteful number, since it uses less digits than its factorization.

157019866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35408.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 157019866 is about 12530.7568007683. The cubic root of 157019866 is about 539.4918241633.

The spelling of 157019866 in words is "one hundred fifty-seven million, nineteen thousand, eight hundred sixty-six".