1890044604 has 60 divisors (see below), whose sum is σ = 5646806704. Its totient is φ = 540012096.

The previous prime is 1890044599. The next prime is 1890044641. The reversal of 1890044604 is 4064400981.

It is a happy number.

1890044604 is a `hidden beast` number, since 1 + 8 + 9 + 0 + 0 + 44 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 414409 + ... + 418944.

Almost surely, 2^1890044604 is an apocalyptic number.

1890044604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1890044604 is an abundant number, since it is smaller than the sum of its proper divisors (3756762100).

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

1890044604 is a wasteful number, since it uses less digits than its factorization.

1890044604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833376 (or 833365 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1890044604 is about 43474.6432302785. The cubic root of 1890044604 is about 1236.3953160994.

It can be divided in two parts, 18900 and 44604, that added together give a square (63504 = 252²).

The spelling of 1890044604 in words is "one billion, eight hundred ninety million, forty-four thousand, six hundred four".