1944974020 has 48 divisors (see below), whose sum is σ = 4528835136. Its totient is φ = 695664000.

The previous prime is 1944974011. The next prime is 1944974023. The reversal of 1944974020 is 204794491.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1944974023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59046 + ... + 85885.

It is an arithmetic number, because the mean of its divisors is an integer number (94350732).

Almost surely, 2^1944974020 is an apocalyptic number.

1944974020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944974020 is an abundant number, since it is smaller than the sum of its proper divisors (2583861116).

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

1944974020 is a wasteful number, since it uses less digits than its factorization.

1944974020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145012 (or 145010 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1944974020 is about 44101.8595979807. The cubic root of 1944974020 is about 1248.2586996916.

The spelling of 1944974020 in words is "one billion, nine hundred forty-four million, nine hundred seventy-four thousand, twenty".