136893523 has 8 divisors (see below), whose sum is σ = 147532448. Its totient is φ = 126270144.

The previous prime is 136893487. The next prime is 136893587. The reversal of 136893523 is 325398631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136893523 - 2²⁵ = 103339091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136893023) 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 7 ways as a sum of consecutive naturals, for example, 19786 + ... + 25792.

It is an arithmetic number, because the mean of its divisors is an integer number (18441556).

Almost surely, 2^136893523 is an apocalyptic number.

136893523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

136893523 is a deficient number, since it is larger than the sum of its proper divisors (10638925).

136893523 is a wasteful number, since it uses less digits than its factorization.

136893523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7773.

The product of its digits is 116640, while the sum is 40.

The square root of 136893523 is about 11700.1505545869. The cubic root of 136893523 is about 515.3800857717.

The spelling of 136893523 in words is "one hundred thirty-six million, eight hundred ninety-three thousand, five hundred twenty-three".