1900144475900 has 36 divisors (see below), whose sum is σ = 4498160198280. Its totient is φ = 690961627200.

The previous prime is 1900144475893. The next prime is 1900144475921. The reversal of 1900144475900 is 95744410091.

It is a super-2 number, since 2×1900144475900² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863700935 + ... + 863703134.

Almost surely, 2^{1900144475900} is an apocalyptic number.

1900144475900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900144475900 is an abundant number, since it is smaller than the sum of its proper divisors (2598015722380).

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

1900144475900 is a wasteful number, since it uses less digits than its factorization.

1900144475900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727404094 (or 1727404087 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

Adding to 1900144475900 its reverse (95744410091), we get a palindrome (1995888885991).

The spelling of 1900144475900 in words is "one trillion, nine hundred billion, one hundred forty-four million, four hundred seventy-five thousand, nine hundred".