133198490 has 16 divisors (see below), whose sum is σ = 240082920. Its totient is φ = 53207040.

The previous prime is 133198447. The next prime is 133198511. The reversal of 133198490 is 94891331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 86508601 + 46689889 = 9301^2 + 6833^2 .

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, 971 + ... + 16350.

Almost surely, 2^133198490 is an apocalyptic number.

133198490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133198490 is a deficient number, since it is larger than the sum of its proper divisors (106884430).

133198490 is a wasteful number, since it uses less digits than its factorization.

133198490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18097.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 133198490 is about 11541.1650191824. The cubic root of 133198490 is about 510.7006773094.

The spelling of 133198490 in words is "one hundred thirty-three million, one hundred ninety-eight thousand, four hundred ninety".