199630156 has 72 divisors (see below), whose sum is σ = 407554560. Its totient is φ = 85319520.

The previous prime is 199630153. The next prime is 199630159. The reversal of 199630156 is 651036991.

It is an interprime number because it is at equal distance from previous prime (199630153) and next prime (199630159).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (199630153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 879315 + ... + 879541.

It is an arithmetic number, because the mean of its divisors is an integer number (5660480).

Almost surely, 2^199630156 is an apocalyptic number.

It is an amenable number.

199630156 is an abundant number, since it is smaller than the sum of its proper divisors (207924404).

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

199630156 is a wasteful number, since it uses less digits than its factorization.

199630156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 199630156 is about 14129.0536130344. The cubic root of 199630156 is about 584.4428484083.

The spelling of 199630156 in words is "one hundred ninety-nine million, six hundred thirty thousand, one hundred fifty-six".