1872002990 has 32 divisors (see below), whose sum is σ = 3958700256. Its totient is φ = 628364160.

The previous prime is 1872002947. The next prime is 1872003017. The reversal of 1872002990 is 992002781.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent 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, 653117 + ... + 655976.

It is an arithmetic number, because the mean of its divisors is an integer number (123709383).

Almost surely, 2^1872002990 is an apocalyptic number.

1872002990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1872002990 is an abundant number, since it is smaller than the sum of its proper divisors (2086697266).

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

1872002990 is a wasteful number, since it uses less digits than its factorization.

1872002990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309124.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1872002990 is about 43266.6498587538. The cubic root of 1872002990 is about 1232.4486857139.

The spelling of 1872002990 in words is "one billion, eight hundred seventy-two million, two thousand, nine hundred ninety".