190128613 has 2 divisors, whose sum is σ = 190128614. Its totient is φ = 190128612.

The previous prime is 190128599. The next prime is 190128623. The reversal of 190128613 is 316821091.

190128613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97160449 + 92968164 = 9857^2 + 9642^2 .

It is a cyclic number.

It is not a de Polignac number, because 190128613 - 2⁹ = 190128101 is a prime.

It is a super-2 number, since 2×190128613² = 72297778962607538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190128623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95064306 + 95064307.

It is an arithmetic number, because the mean of its divisors is an integer number (95064307).

Almost surely, 2^190128613 is an apocalyptic number.

It is an amenable number.

190128613 is a deficient number, since it is larger than the sum of its proper divisors (1).

190128613 is an equidigital number, since it uses as much as digits as its factorization.

190128613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 190128613 is about 13788.7132467102. The cubic root of 190128613 is about 575.0193949350.

The spelling of 190128613 in words is "one hundred ninety million, one hundred twenty-eight thousand, six hundred thirteen".