157859893 has 2 divisors, whose sum is σ = 157859894. Its totient is φ = 157859892.

The previous prime is 157859831. The next prime is 157859951. The reversal of 157859893 is 398958751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155176849 + 2683044 = 12457^2 + 1638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157859893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157859813) by changing a digit.

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 as a sum of consecutive naturals, namely, 78929946 + 78929947.

It is an arithmetic number, because the mean of its divisors is an integer number (78929947).

Almost surely, 2^157859893 is an apocalyptic number.

It is an amenable number.

157859893 is a deficient number, since it is larger than the sum of its proper divisors (1).

157859893 is an equidigital number, since it uses as much as digits as its factorization.

157859893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 55.

The square root of 157859893 is about 12564.2306967040. The cubic root of 157859893 is about 540.4521738459.

The spelling of 157859893 in words is "one hundred fifty-seven million, eight hundred fifty-nine thousand, eight hundred ninety-three".