199481490 has 48 divisors (see below), whose sum is σ = 558551448. Its totient is φ = 49102848.

The previous prime is 199481483. The next prime is 199481521. The reversal of 199481490 is 94184991.

It can be written as a sum of positive squares in 4 ways, for example, as 100220121 + 99261369 = 10011^2 + 9963^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84079 + ... + 86418.

Almost surely, 2^199481490 is an apocalyptic number.

199481490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199481490 is an abundant number, since it is smaller than the sum of its proper divisors (359069958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199481490 is a wasteful number, since it uses less digits than its factorization.

199481490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170523 (or 170520 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 199481490 is about 14123.7916297289. The cubic root of 199481490 is about 584.2977327945.

The spelling of 199481490 in words is "one hundred ninety-nine million, four hundred eighty-one thousand, four hundred ninety".