157178863 has 2 divisors, whose sum is σ = 157178864. Its totient is φ = 157178862.

The previous prime is 157178831. The next prime is 157178893. The reversal of 157178863 is 368871751.

It is a strong prime.

It is an emirp because it is prime and its reverse (368871751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157178863 - 2⁵ = 157178831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157178893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78589431 + 78589432.

It is an arithmetic number, because the mean of its divisors is an integer number (78589432).

Almost surely, 2^157178863 is an apocalyptic number.

157178863 is a deficient number, since it is larger than the sum of its proper divisors (1).

157178863 is an equidigital number, since it uses as much as digits as its factorization.

157178863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 46.

The square root of 157178863 is about 12537.0994651873. The cubic root of 157178863 is about 539.6738577015.

The spelling of 157178863 in words is "one hundred fifty-seven million, one hundred seventy-eight thousand, eight hundred sixty-three".