195181490 has 64 divisors (see below), whose sum is σ = 427127040. Its totient is φ = 62726400.

The previous prime is 195181463. The next prime is 195181523. The reversal of 195181490 is 94181591.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133604 + ... + 135056.

It is an arithmetic number, because the mean of its divisors is an integer number (6673860).

Almost surely, 2^195181490 is an apocalyptic number.

195181490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195181490 is an abundant number, since it is smaller than the sum of its proper divisors (231945550).

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

195181490 is a wasteful number, since it uses less digits than its factorization.

195181490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 195181490 is about 13970.7369168559. The cubic root of 195181490 is about 580.0688483471.

The spelling of 195181490 in words is "one hundred ninety-five million, one hundred eighty-one thousand, four hundred ninety".