298618631 has 4 divisors (see below), whose sum is σ = 299957952. Its totient is φ = 297279312.

The previous prime is 298618627. The next prime is 298618633. The reversal of 298618631 is 136816892.

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

It is a cyclic number.

It is not a de Polignac number, because 298618631 - 2² = 298618627 is a prime.

It is a super-2 number, since 2×298618631² = 178346173560628322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298618633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669326 + ... + 669771.

It is an arithmetic number, because the mean of its divisors is an integer number (74989488).

Almost surely, 2^298618631 is an apocalyptic number.

298618631 is a deficient number, since it is larger than the sum of its proper divisors (1339321).

298618631 is a wasteful number, since it uses less digits than its factorization.

298618631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339320.

The product of its digits is 124416, while the sum is 44.

The square root of 298618631 is about 17280.5853778163. The cubic root of 298618631 is about 668.4038868613.

The spelling of 298618631 in words is "two hundred ninety-eight million, six hundred eighteen thousand, six hundred thirty-one".