190255387 has 6 divisors (see below), whose sum is σ = 221317548. Its totient is φ = 163076004.

The previous prime is 190255357. The next prime is 190255391. The reversal of 190255387 is 783552091.

190255387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190255387 - 2²³ = 181866779 is a prime.

It is a super-2 number, since 2×190255387² = 72394224565039538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190255357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1941333 + ... + 1941430.

It is an arithmetic number, because the mean of its divisors is an integer number (36886258).

Almost surely, 2^190255387 is an apocalyptic number.

190255387 is a deficient number, since it is larger than the sum of its proper divisors (31062161).

190255387 is an equidigital number, since it uses as much as digits as its factorization.

190255387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882777 (or 3882770 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 190255387 is about 13793.3095013488. The cubic root of 190255387 is about 575.1471703943.

The spelling of 190255387 in words is "one hundred ninety million, two hundred fifty-five thousand, three hundred eighty-seven".