136437494 has 4 divisors (see below), whose sum is σ = 204656244. Its totient is φ = 68218746.

The previous prime is 136437493. The next prime is 136437533. The reversal of 136437494 is 494734631.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136437493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34109372 + ... + 34109375.

It is an arithmetic number, because the mean of its divisors is an integer number (51164061).

Almost surely, 2^136437494 is an apocalyptic number.

136437494 is a deficient number, since it is larger than the sum of its proper divisors (68218750).

136437494 is an equidigital number, since it uses as much as digits as its factorization.

136437494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68218749.

The product of its digits is 217728, while the sum is 41.

The square root of 136437494 is about 11680.6461293886. The cubic root of 136437494 is about 514.8071593961.

The spelling of 136437494 in words is "one hundred thirty-six million, four hundred thirty-seven thousand, four hundred ninety-four".