1931983434 has 32 divisors (see below), whose sum is σ = 4297991040. Its totient is φ = 643290336.

The previous prime is 1931983433. The next prime is 1931983483. The reversal of 1931983434 is 4343891391.

It is a self number, because there is not a number n which added to its sum of digits gives 1931983434.

It is not an unprimeable number, because it can be changed into a prime (1931983433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31507 + ... + 69689.

It is an arithmetic number, because the mean of its divisors is an integer number (134312220).

Almost surely, 2^1931983434 is an apocalyptic number.

1931983434 is an abundant number, since it is smaller than the sum of its proper divisors (2366007606).

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

1931983434 is a wasteful number, since it uses less digits than its factorization.

1931983434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39131 (or 39125 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1931983434 is about 43954.3335064928. Note that the first 3 decimals coincide. The cubic root of 1931983434 is about 1245.4734271503.

The spelling of 1931983434 in words is "one billion, nine hundred thirty-one million, nine hundred eighty-three thousand, four hundred thirty-four".