136078493 has 2 divisors, whose sum is σ = 136078494. Its totient is φ = 136078492.

The previous prime is 136078471. The next prime is 136078559. The reversal of 136078493 is 394870631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79798489 + 56280004 = 8933^2 + 7502^2 .

It is a cyclic number.

It is not a de Polignac number, because 136078493 - 2¹² = 136074397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136078493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136078793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68039246 + 68039247.

It is an arithmetic number, because the mean of its divisors is an integer number (68039247).

Almost surely, 2^136078493 is an apocalyptic number.

It is an amenable number.

136078493 is a deficient number, since it is larger than the sum of its proper divisors (1).

136078493 is an equidigital number, since it uses as much as digits as its factorization.

136078493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 136078493 is about 11665.2686638585. The cubic root of 136078493 is about 514.3552342051.

The spelling of 136078493 in words is "one hundred thirty-six million, seventy-eight thousand, four hundred ninety-three".