1993017994 has 16 divisors (see below), whose sum is σ = 3316580640. Its totient is φ = 890562160.

The previous prime is 1993017973. The next prime is 1993018003. The reversal of 1993017994 is 4997103991.

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, 766429 + ... + 769024.

It is an arithmetic number, because the mean of its divisors is an integer number (207286290).

Almost surely, 2^1993017994 is an apocalyptic number.

1993017994 is a deficient number, since it is larger than the sum of its proper divisors (1323562646).

1993017994 is a wasteful number, since it uses less digits than its factorization.

1993017994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535525.

The product of its (nonzero) digits is 551124, while the sum is 52.

The square root of 1993017994 is about 44643.2301026707. The cubic root of 1993017994 is about 1258.4532111026.

The spelling of 1993017994 in words is "one billion, nine hundred ninety-three million, seventeen thousand, nine hundred ninety-four".