199693768 has 48 divisors (see below), whose sum is σ = 394458480. Its totient is φ = 94750656.

The previous prime is 199693729. The next prime is 199693787. The reversal of 199693768 is 867396991.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450555 + ... + 450997.

It is an arithmetic number, because the mean of its divisors is an integer number (8217885).

Almost surely, 2^199693768 is an apocalyptic number.

199693768 is the 7554-th centered heptagonal number.

It is an amenable number.

199693768 is a deficient number, since it is larger than the sum of its proper divisors (194764712).

199693768 is a wasteful number, since it uses less digits than its factorization.

199693768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 541 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 58.

The square root of 199693768 is about 14131.3045399213. The cubic root of 199693768 is about 584.5049192414.

The spelling of 199693768 in words is "one hundred ninety-nine million, six hundred ninety-three thousand, seven hundred sixty-eight".