199118712 has 32 divisors (see below), whose sum is σ = 536089680. Its totient is φ = 61267200.

The previous prime is 199118629. The next prime is 199118723. The reversal of 199118712 is 217811991.

It is a super-2 number, since 2×199118712² = 79296522937077888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 318789 + ... + 319412.

Almost surely, 2^199118712 is an apocalyptic number.

199118712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199118712 is an abundant number, since it is smaller than the sum of its proper divisors (336970968).

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

199118712 is a wasteful number, since it uses less digits than its factorization.

199118712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638223 (or 638219 counting only the distinct ones).

The product of its digits is 9072, while the sum is 39.

The square root of 199118712 is about 14110.9429876249. The cubic root of 199118712 is about 583.9433156342.

The spelling of 199118712 in words is "one hundred ninety-nine million, one hundred eighteen thousand, seven hundred twelve".