1900649641920 has 112 divisors (see below), whose sum is σ = 6352171232640. Its totient is φ = 480164115456.

The previous prime is 1900649641907. The next prime is 1900649641937. The reversal of 1900649641920 is 291469460091.

It is a super-2 number, since 2×1900649641920² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52082902 + ... + 52119381.

Almost surely, 2^{1900649641920} is an apocalyptic number.

1900649641920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900649641920 is an abundant number, since it is smaller than the sum of its proper divisors (4451521590720).

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

1900649641920 is a wasteful number, since it uses less digits than its factorization.

1900649641920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104202322 (or 104202312 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 1900649641920 in words is "one trillion, nine hundred billion, six hundred forty-nine million, six hundred forty-one thousand, nine hundred twenty".