159490874 has 4 divisors (see below), whose sum is σ = 239236314. Its totient is φ = 79745436.

The previous prime is 159490873. The next prime is 159490897. The reversal of 159490874 is 478094951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 94575625 + 64915249 = 9725^2 + 8057^2 .

It is not an unprimeable number, because it can be changed into a prime (159490873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39872717 + ... + 39872720.

Almost surely, 2^159490874 is an apocalyptic number.

159490874 is a deficient number, since it is larger than the sum of its proper divisors (79745440).

159490874 is an equidigital number, since it uses as much as digits as its factorization.

159490874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79745439.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 159490874 is about 12628.9696333470. The cubic root of 159490874 is about 542.3070862280.

The spelling of 159490874 in words is "one hundred fifty-nine million, four hundred ninety thousand, eight hundred seventy-four".