981481598 has 4 divisors (see below), whose sum is σ = 1472222400. Its totient is φ = 490740798.

The previous prime is 981481561. The next prime is 981481601. The reversal of 981481598 is 895184189.

It is a happy number.

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

It is a super-2 number, since 2×981481598² = 1926612254425267208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245370398 + ... + 245370401.

It is an arithmetic number, because the mean of its divisors is an integer number (368055600).

Almost surely, 2^981481598 is an apocalyptic number.

981481598 is a deficient number, since it is larger than the sum of its proper divisors (490740802).

981481598 is a wasteful number, since it uses less digits than its factorization.

981481598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490740801.

The product of its digits is 829440, while the sum is 53.

The square root of 981481598 is about 31328.6067037779. The cubic root of 981481598 is about 993.7886989505.

The spelling of 981481598 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred ninety-eight".