136538417 has 4 divisors (see below), whose sum is σ = 137376240. Its totient is φ = 135700596.

The previous prime is 136538411. The next prime is 136538453. The reversal of 136538417 is 714835631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136538417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136538411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418667 + ... + 418992.

It is an arithmetic number, because the mean of its divisors is an integer number (34344060).

Almost surely, 2^136538417 is an apocalyptic number.

It is an amenable number.

136538417 is a deficient number, since it is larger than the sum of its proper divisors (837823).

136538417 is an equidigital number, since it uses as much as digits as its factorization.

136538417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837822.

The product of its digits is 60480, while the sum is 38.

The square root of 136538417 is about 11684.9654257084. The cubic root of 136538417 is about 514.9340626299.

The spelling of 136538417 in words is "one hundred thirty-six million, five hundred thirty-eight thousand, four hundred seventeen".