199042788 has 24 divisors (see below), whose sum is σ = 530780992. Its totient is φ = 56869344.

The previous prime is 199042777. The next prime is 199042801. The reversal of 199042788 is 887240991.

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, 1184695 + ... + 1184862.

Almost surely, 2^199042788 is an apocalyptic number.

It is an amenable number.

199042788 is an abundant number, since it is smaller than the sum of its proper divisors (331738204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199042788 is a wasteful number, since it uses less digits than its factorization.

199042788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369571 (or 2369569 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 199042788 is about 14108.2524786027. The cubic root of 199042788 is about 583.8690869692.

The spelling of 199042788 in words is "one hundred ninety-nine million, forty-two thousand, seven hundred eighty-eight".