1905090474 has 32 divisors (see below), whose sum is σ = 4356084096. Its totient is φ = 544112640.

The previous prime is 1905090469. The next prime is 1905090487. The reversal of 1905090474 is 4740905091.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138634 + ... + 151754.

It is an arithmetic number, because the mean of its divisors is an integer number (136127628).

Almost surely, 2^1905090474 is an apocalyptic number.

1905090474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1905090474 is an abundant number, since it is smaller than the sum of its proper divisors (2450993622).

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

1905090474 is a wasteful number, since it uses less digits than its factorization.

1905090474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16590.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1905090474 is about 43647.3421183925. The cubic root of 1905090474 is about 1239.6674606899.

The spelling of 1905090474 in words is "one billion, nine hundred five million, ninety thousand, four hundred seventy-four".