1931972 has 18 divisors (see below), whose sum is σ = 3933342. Its totient is φ = 827904.

The previous prime is 1931957. The next prime is 1931983. The reversal of 1931972 is 2791391.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1552516 + 379456 = 1246^2 + 616^2 .

It is a super-3 number, since 3×1931972³ = 21633348096384126144, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4733 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (218519).

2^1931972 is an apocalyptic number.

It is an amenable number.

1931972 is an abundant number, since it is smaller than the sum of its proper divisors (2001370).

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

1931972 is a wasteful number, since it uses less digits than its factorization.

1931972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875 (or 9866 counting only the distinct ones).

The product of its digits is 3402, while the sum is 32.

The square root of 1931972 is about 1389.9539560719. The cubic root of 1931972 is about 124.5470970129.

It can be divided in two parts, 19319 and 72, that added together give a palindrome (19391).

The spelling of 1931972 in words is "one million, nine hundred thirty-one thousand, nine hundred seventy-two".