157368919 has 8 divisors (see below), whose sum is σ = 159025680. Its totient is φ = 155721216.

The previous prime is 157368917. The next prime is 157368923. The reversal of 157368919 is 919863751.

157368919 = 192² + 193² + ... + 782².

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

It is a cyclic number.

It is not a de Polignac number, because 157368919 - 2¹ = 157368917 is a prime.

It is a super-2 number, since 2×157368919² = 49529953334457122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157368917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35952 + ... + 40090.

It is an arithmetic number, because the mean of its divisors is an integer number (19878210).

Almost surely, 2^157368919 is an apocalyptic number.

157368919 is a deficient number, since it is larger than the sum of its proper divisors (1656761).

157368919 is a wasteful number, since it uses less digits than its factorization.

157368919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529.

The product of its digits is 408240, while the sum is 49.

The square root of 157368919 is about 12544.6769189166. The cubic root of 157368919 is about 539.8912892731.

The spelling of 157368919 in words is "one hundred fifty-seven million, three hundred sixty-eight thousand, nine hundred nineteen".