136551893 has 4 divisors (see below), whose sum is σ = 136583040. Its totient is φ = 136520748.

The previous prime is 136551839. The next prime is 136551937. The reversal of 136551893 is 398155631.

136551893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 136551893 - 2⁸ = 136551637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136551893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136551823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7655 + ... + 18212.

It is an arithmetic number, because the mean of its divisors is an integer number (34145760).

Almost surely, 2^136551893 is an apocalyptic number.

It is an amenable number.

136551893 is a deficient number, since it is larger than the sum of its proper divisors (31147).

136551893 is an equidigital number, since it uses as much as digits as its factorization.

136551893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31146.

The product of its digits is 97200, while the sum is 41.

The square root of 136551893 is about 11685.5420499008. The cubic root of 136551893 is about 514.9510029736.

The spelling of 136551893 in words is "one hundred thirty-six million, five hundred fifty-one thousand, eight hundred ninety-three".