136234945 has 24 divisors (see below), whose sum is σ = 207465408. Its totient is φ = 84924000.

The previous prime is 136234939. The next prime is 136234949. The reversal of 136234945 is 549432631.

It is not a de Polignac number, because 136234945 - 2⁵ = 136234913 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136234949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22581 + ... + 27970.

It is an arithmetic number, because the mean of its divisors is an integer number (8644392).

Almost surely, 2^136234945 is an apocalyptic number.

It is an amenable number.

136234945 is a deficient number, since it is larger than the sum of its proper divisors (71230463).

136234945 is a wasteful number, since it uses less digits than its factorization.

136234945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50581 (or 50574 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 136234945 is about 11671.9726267671. The cubic root of 136234945 is about 514.5522800007.

The spelling of 136234945 in words is "one hundred thirty-six million, two hundred thirty-four thousand, nine hundred forty-five".