633481990 has 16 divisors (see below), whose sum is σ = 1141010352. Its totient is φ = 253227744.

The previous prime is 633481963. The next prime is 633482039. The reversal of 633481990 is 99184336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3864 + ... + 35803.

It is an arithmetic number, because the mean of its divisors is an integer number (71313147).

Almost surely, 2^633481990 is an apocalyptic number.

633481990 is a deficient number, since it is larger than the sum of its proper divisors (507528362).

633481990 is a wasteful number, since it uses less digits than its factorization.

633481990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41271.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 633481990 is about 25169.0681194199. The cubic root of 633481990 is about 858.8383405352.

The spelling of 633481990 in words is "six hundred thirty-three million, four hundred eighty-one thousand, nine hundred ninety".