190683891 has 12 divisors (see below), whose sum is σ = 276035760. Its totient is φ = 126844080.

The previous prime is 190683881. The next prime is 190683901. The reversal of 190683891 is 198386091.

It is an interprime number because it is at equal distance from previous prime (190683881) and next prime (190683901).

It is not a de Polignac number, because 190683891 - 2⁷ = 190683763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190683851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18831 + ... + 27128.

It is an arithmetic number, because the mean of its divisors is an integer number (23002980).

Almost surely, 2^190683891 is an apocalyptic number.

190683891 is a deficient number, since it is larger than the sum of its proper divisors (85351869).

190683891 is a wasteful number, since it uses less digits than its factorization.

190683891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46426 (or 46423 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 190683891 is about 13808.8338030407. The cubic root of 190683891 is about 575.5786396825.

The spelling of 190683891 in words is "one hundred ninety million, six hundred eighty-three thousand, eight hundred ninety-one".