1900612631440 has 40 divisors (see below), whose sum is σ = 4651499338560. Its totient is φ = 720232154496.

The previous prime is 1900612631419. The next prime is 1900612631471. The reversal of 1900612631440 is 441362160091.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1900612631440² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900612631440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625200004 + ... + 625203043.

It is an arithmetic number, because the mean of its divisors is an integer number (116287483464).

Almost surely, 2^{1900612631440} is an apocalyptic number.

1900612631440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900612631440 is an abundant number, since it is smaller than the sum of its proper divisors (2750886707120).

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

1900612631440 is a wasteful number, since it uses less digits than its factorization.

1900612631440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250403079 (or 1250403073 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 1900612631440 in words is "one trillion, nine hundred billion, six hundred twelve million, six hundred thirty-one thousand, four hundred forty".