1920744515940 has 96 divisors (see below), whose sum is σ = 5399041622016. Its totient is φ = 510203422080.

The previous prime is 1920744515933. The next prime is 1920744515941. The reversal of 1920744515940 is 495154470291.

It is not an unprimeable number, because it can be changed into a prime (1920744515941) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 108981969 + ... + 108999591.

It is an arithmetic number, because the mean of its divisors is an integer number (56240016896).

Almost surely, 2^{1920744515940} is an apocalyptic number.

1920744515940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920744515940 is an abundant number, since it is smaller than the sum of its proper divisors (3478297106076).

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

1920744515940 is a wasteful number, since it uses less digits than its factorization.

1920744515940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24609 (or 24607 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 1920744515940 in words is "one trillion, nine hundred twenty billion, seven hundred forty-four million, five hundred fifteen thousand, nine hundred forty".