1900500420 has 96 divisors (see below), whose sum is σ = 6549435648. Its totient is φ = 400983552.

The previous prime is 1900500391. The next prime is 1900500439. The reversal of 1900500420 is 240050091.

It is a super-2 number, since 2×1900500420² = 7223803692840352800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 168579 + ... + 179498.

It is an arithmetic number, because the mean of its divisors is an integer number (68223288).

Almost surely, 2^1900500420 is an apocalyptic number.

1900500420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900500420 is an abundant number, since it is smaller than the sum of its proper divisors (4648935228).

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

1900500420 is a wasteful number, since it uses less digits than its factorization.

1900500420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348109 (or 348107 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1900500420 is about 43594.7292685710. The cubic root of 1900500420 is about 1238.6710571661.

The spelling of 1900500420 in words is "one billion, nine hundred million, five hundred thousand, four hundred twenty".