136073789 has 4 divisors (see below), whose sum is σ = 138969024. Its totient is φ = 133178556.

The previous prime is 136073779. The next prime is 136073837. The reversal of 136073789 is 987370631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 987370631 = 13 ⋅75951587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136073789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136073779) 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, 1447547 + ... + 1447640.

It is an arithmetic number, because the mean of its divisors is an integer number (34742256).

Almost surely, 2^136073789 is an apocalyptic number.

It is an amenable number.

136073789 is a deficient number, since it is larger than the sum of its proper divisors (2895235).

136073789 is an equidigital number, since it uses as much as digits as its factorization.

136073789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895234.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 136073789 is about 11665.0670379557. The cubic root of 136073789 is about 514.3493073442.

The spelling of 136073789 in words is "one hundred thirty-six million, seventy-three thousand, seven hundred eighty-nine".