1900128338020 has 48 divisors (see below), whose sum is σ = 4353626426688. Its totient is φ = 690859704960.

The previous prime is 1900128337973. The next prime is 1900128338021. The reversal of 1900128338020 is 208338210091.

It is a super-2 number, since 2×1900128338020² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900128338021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995419 + ... + 2188861.

It is an arithmetic number, because the mean of its divisors is an integer number (90700550556).

Almost surely, 2^{1900128338020} is an apocalyptic number.

1900128338020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900128338020 is an abundant number, since it is smaller than the sum of its proper divisors (2453498088668).

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

1900128338020 is a wasteful number, since it uses less digits than its factorization.

1900128338020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200700 (or 1200698 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 1900128338020 in words is "one trillion, nine hundred billion, one hundred twenty-eight million, three hundred thirty-eight thousand, twenty".