190115897 has 2 divisors, whose sum is σ = 190115898. Its totient is φ = 190115896.

The previous prime is 190115873. The next prime is 190115921. The reversal of 190115897 is 798511091.

190115897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (190115873) and next prime (190115921).

It can be written as a sum of positive squares in only one way, i.e., 112869376 + 77246521 = 10624^2 + 8789^2 .

It is a cyclic number.

It is not a de Polignac number, because 190115897 - 2²⁶ = 123007033 is a prime.

It is a super-2 number, since 2×190115897² = 72288108584229218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190115297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95057948 + 95057949.

It is an arithmetic number, because the mean of its divisors is an integer number (95057949).

Almost surely, 2^190115897 is an apocalyptic number.

It is an amenable number.

190115897 is a deficient number, since it is larger than the sum of its proper divisors (1).

190115897 is an equidigital number, since it uses as much as digits as its factorization.

190115897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 190115897 is about 13788.2521372362. The cubic root of 190115897 is about 575.0065753501.

The spelling of 190115897 in words is "one hundred ninety million, one hundred fifteen thousand, eight hundred ninety-seven".