190364387 has 2 divisors, whose sum is σ = 190364388. Its totient is φ = 190364386.

The previous prime is 190364359. The next prime is 190364407. The reversal of 190364387 is 783463091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190364387 - 2¹⁴ = 190348003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190364327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95182193 + 95182194.

It is an arithmetic number, because the mean of its divisors is an integer number (95182194).

Almost surely, 2^190364387 is an apocalyptic number.

190364387 is a deficient number, since it is larger than the sum of its proper divisors (1).

190364387 is an equidigital number, since it uses as much as digits as its factorization.

190364387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 190364387 is about 13797.2601265614. The cubic root of 190364387 is about 575.2569860727.

The spelling of 190364387 in words is "one hundred ninety million, three hundred sixty-four thousand, three hundred eighty-seven".