157117619 has 2 divisors, whose sum is σ = 157117620. Its totient is φ = 157117618.

The previous prime is 157117607. The next prime is 157117643. The reversal of 157117619 is 916711751.

It is a weak prime.

It is an emirp because it is prime and its reverse (916711751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157117619 - 2⁴ = 157117603 is a prime.

It is a super-2 number, since 2×157117619² = 49371892400458322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157117019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78558809 + 78558810.

It is an arithmetic number, because the mean of its divisors is an integer number (78558810).

Almost surely, 2^157117619 is an apocalyptic number.

157117619 is a deficient number, since it is larger than the sum of its proper divisors (1).

157117619 is an equidigital number, since it uses as much as digits as its factorization.

157117619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 38.

The square root of 157117619 is about 12534.6567164801. The cubic root of 157117619 is about 539.6037548075.

The spelling of 157117619 in words is "one hundred fifty-seven million, one hundred seventeen thousand, six hundred nineteen".