190274087 has 2 divisors, whose sum is σ = 190274088. Its totient is φ = 190274086.

The previous prime is 190274083. The next prime is 190274129. The reversal of 190274087 is 780472091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190274087 - 2² = 190274083 is a prime.

It is a Chen prime.

It is equal to p_10569863 and since 190274087 and 10569863 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190274087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190274083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95137043 + 95137044.

It is an arithmetic number, because the mean of its divisors is an integer number (95137044).

Almost surely, 2^190274087 is an apocalyptic number.

190274087 is a deficient number, since it is larger than the sum of its proper divisors (1).

190274087 is an equidigital number, since it uses as much as digits as its factorization.

190274087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 190274087 is about 13793.9873495665. The cubic root of 190274087 is about 575.1660133119.

The spelling of 190274087 in words is "one hundred ninety million, two hundred seventy-four thousand, eighty-seven".