136190493 has 6 divisors (see below), whose sum is σ = 196719614. Its totient is φ = 90793656.

The previous prime is 136190489. The next prime is 136190507. The reversal of 136190493 is 394091631.

It can be written as a sum of positive squares in only one way, i.e., 90668484 + 45522009 = 9522^2 + 6747^2 .

It is not a de Polignac number, because 136190493 - 2² = 136190489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136190413) 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, 7566130 + ... + 7566147.

Almost surely, 2^136190493 is an apocalyptic number.

It is an amenable number.

136190493 is a deficient number, since it is larger than the sum of its proper divisors (60529121).

136190493 is a wasteful number, since it uses less digits than its factorization.

136190493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15132283 (or 15132280 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 136190493 is about 11670.0682517284. The cubic root of 136190493 is about 514.4963096178.

The spelling of 136190493 in words is "one hundred thirty-six million, one hundred ninety thousand, four hundred ninety-three".