1993172 has 12 divisors (see below), whose sum is σ = 3508596. Its totient is φ = 990720.

The previous prime is 1993163. The next prime is 1993193. The reversal of 1993172 is 2713991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 835396 + 1157776 = 914^2 + 1076^2 .

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, 653 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (292383).

2^1993172 is an apocalyptic number.

It is an amenable number.

1993172 is a deficient number, since it is larger than the sum of its proper divisors (1515424).

1993172 is a wasteful number, since it uses less digits than its factorization.

1993172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938 (or 2936 counting only the distinct ones).

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

The square root of 1993172 is about 1411.7974358951. The cubic root of 1993172 is about 125.8485624985.

The spelling of 1993172 in words is "one million, nine hundred ninety-three thousand, one hundred seventy-two".