191385082 has 32 divisors (see below), whose sum is σ = 354499200. Its totient is φ = 77192640.

The previous prime is 191385059. The next prime is 191385083. The reversal of 191385082 is 280583191.

It is a super-2 number, since 2×191385082² = 73256499224293448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (191385083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3457 + ... + 19867.

It is an arithmetic number, because the mean of its divisors is an integer number (11078100).

Almost surely, 2^191385082 is an apocalyptic number.

191385082 is a deficient number, since it is larger than the sum of its proper divisors (163114118).

191385082 is a wasteful number, since it uses less digits than its factorization.

191385082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16451 (or 16437 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 191385082 is about 13834.1997238727. The cubic root of 191385082 is about 576.2832908337.

The spelling of 191385082 in words is "one hundred ninety-one million, three hundred eighty-five thousand, eighty-two".