1931374842 has 16 divisors (see below), whose sum is σ = 3952581600. Its totient is φ = 628819632.

The previous prime is 1931374817. The next prime is 1931374843. The reversal of 1931374842 is 2484731391.

It is a junction number, because it is equal to n+sod(n) for n = 1931374794 and 1931374803.

It is not an unprimeable number, because it can be changed into a prime (1931374843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3742717 + ... + 3743232.

It is an arithmetic number, because the mean of its divisors is an integer number (247036350).

Almost surely, 2^1931374842 is an apocalyptic number.

1931374842 is an abundant number, since it is smaller than the sum of its proper divisors (2021206758).

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

1931374842 is a wasteful number, since it uses less digits than its factorization.

1931374842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485997.

The product of its digits is 145152, while the sum is 42.

The square root of 1931374842 is about 43947.4099578121. The cubic root of 1931374842 is about 1245.3426350060.

The spelling of 1931374842 in words is "one billion, nine hundred thirty-one million, three hundred seventy-four thousand, eight hundred forty-two".