190925491 has 2 divisors, whose sum is σ = 190925492. Its totient is φ = 190925490.

The previous prime is 190925489. The next prime is 190925533. The reversal of 190925491 is 194529091.

190925491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190925491 - 2¹ = 190925489 is a prime.

It is a super-2 number, since 2×190925491² = 72905086227182162, which contains 22 as substring.

Together with 190925489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (190925401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95462745 + 95462746.

It is an arithmetic number, because the mean of its divisors is an integer number (95462746).

Almost surely, 2^190925491 is an apocalyptic number.

190925491 is a deficient number, since it is larger than the sum of its proper divisors (1).

190925491 is an equidigital number, since it uses as much as digits as its factorization.

190925491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 190925491 is about 13817.5790571286. The cubic root of 190925491 is about 575.8216266656.

The spelling of 190925491 in words is "one hundred ninety million, nine hundred twenty-five thousand, four hundred ninety-one".