136785394 has 4 divisors (see below), whose sum is σ = 205178094. Its totient is φ = 68392696.

The previous prime is 136785379. The next prime is 136785401. The reversal of 136785394 is 493587631.

136785394 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.

It can be written as a sum of positive squares in only one way, i.e., 80730225 + 56055169 = 8985^2 + 7487^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34196347 + ... + 34196350.

Almost surely, 2^136785394 is an apocalyptic number.

136785394 is a deficient number, since it is larger than the sum of its proper divisors (68392700).

136785394 is an equidigital number, since it uses as much as digits as its factorization.

136785394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68392699.

The product of its digits is 544320, while the sum is 46.

The square root of 136785394 is about 11695.5288037780. The cubic root of 136785394 is about 515.2443544599.

The spelling of 136785394 in words is "one hundred thirty-six million, seven hundred eighty-five thousand, three hundred ninety-four".