159419857 has 2 divisors, whose sum is σ = 159419858. Its totient is φ = 159419856.

The previous prime is 159419851. The next prime is 159419933. The reversal of 159419857 is 758914951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155975121 + 3444736 = 12489^2 + 1856^2 .

It is a cyclic number.

It is not a de Polignac number, because 159419857 - 2²⁷ = 25202129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159419857.

It is not a weakly prime, because it can be changed into another prime (159419851) 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, 79709928 + 79709929.

It is an arithmetic number, because the mean of its divisors is an integer number (79709929).

Almost surely, 2^159419857 is an apocalyptic number.

It is an amenable number.

159419857 is a deficient number, since it is larger than the sum of its proper divisors (1).

159419857 is an equidigital number, since it uses as much as digits as its factorization.

159419857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 49.

The square root of 159419857 is about 12626.1576498949. The cubic root of 159419857 is about 542.2265826877.

The spelling of 159419857 in words is "one hundred fifty-nine million, four hundred nineteen thousand, eight hundred fifty-seven".