1993738 has 16 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 959616.

The previous prime is 1993729. The next prime is 1993757. The reversal of 1993738 is 8373991.

It is a self number, because there is not a number n which added to its sum of digits gives 1993738.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8223 + ... + 8461.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^1993738 is an apocalyptic number.

1993738 is a deficient number, since it is larger than the sum of its proper divisors (1110902).

1993738 is a wasteful number, since it uses less digits than its factorization.

1993738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its digits is 40824, while the sum is 40.

The square root of 1993738 is about 1411.9978753525. The cubic root of 1993738 is about 125.8604737544.

The spelling of 1993738 in words is "one million, nine hundred ninety-three thousand, seven hundred thirty-eight".