136178473 has 2 divisors, whose sum is σ = 136178474. Its totient is φ = 136178472.

The previous prime is 136178467. The next prime is 136178477. The reversal of 136178473 is 374871631.

136178473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134745664 + 1432809 = 11608^2 + 1197^2 .

It is an emirp because it is prime and its reverse (374871631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136178473 is a prime.

It is a super-2 number, since 2×136178473² = 37089153017223458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136178477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68089236 + 68089237.

It is an arithmetic number, because the mean of its divisors is an integer number (68089237).

Almost surely, 2^136178473 is an apocalyptic number.

It is an amenable number.

136178473 is a deficient number, since it is larger than the sum of its proper divisors (1).

136178473 is an equidigital number, since it uses as much as digits as its factorization.

136178473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 136178473 is about 11669.5532476612. The cubic root of 136178473 is about 514.4811729087.

The spelling of 136178473 in words is "one hundred thirty-six million, one hundred seventy-eight thousand, four hundred seventy-three".