1930031890820 has 24 divisors (see below), whose sum is σ = 4421527604928. Its totient is φ = 701829778400.

The previous prime is 1930031890769. The next prime is 1930031890907. The reversal of 1930031890820 is 280981300391.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4386435896 + ... + 4386436335.

It is an arithmetic number, because the mean of its divisors is an integer number (184230316872).

Almost surely, 2^{1930031890820} is an apocalyptic number.

1930031890820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1930031890820 is an abundant number, since it is smaller than the sum of its proper divisors (2491495714108).

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

1930031890820 is a wasteful number, since it uses less digits than its factorization.

1930031890820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772872251 (or 8772872249 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 1930031890820 in words is "one trillion, nine hundred thirty billion, thirty-one million, eight hundred ninety thousand, eight hundred twenty".