1931964 has 12 divisors (see below), whose sum is σ = 4507944. Its totient is φ = 643984.

The previous prime is 1931957. The next prime is 1931983. The reversal of 1931964 is 4691391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80487 + ... + 80510.

It is an arithmetic number, because the mean of its divisors is an integer number (375662).

2^1931964 is an apocalyptic number.

It is an amenable number.

1931964 is an abundant number, since it is smaller than the sum of its proper divisors (2575980).

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

1931964 is a wasteful number, since it uses less digits than its factorization.

1931964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161004 (or 161002 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 1931964 is about 1389.9510782758. The cubic root of 1931964 is about 124.5469251026.

The spelling of 1931964 in words is "one million, nine hundred thirty-one thousand, nine hundred sixty-four".