1985972 has 6 divisors (see below), whose sum is σ = 3475458. Its totient is φ = 992984.

The previous prime is 1985939. The next prime is 1985987. The reversal of 1985972 is 2795891.

It can be written as a sum of positive squares in only one way, i.e., 1336336 + 649636 = 1156^2 + 806^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248243 + ... + 248250.

It is an arithmetic number, because the mean of its divisors is an integer number (579243).

2^1985972 is an apocalyptic number.

It is an amenable number.

1985972 is a deficient number, since it is larger than the sum of its proper divisors (1489486).

1985972 is a wasteful number, since it uses less digits than its factorization.

1985972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496497 (or 496495 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 1985972 is about 1409.2451880351. The cubic root of 1985972 is about 125.6968440482.

The spelling of 1985972 in words is "one million, nine hundred eighty-five thousand, nine hundred seventy-two".