136451894 has 16 divisors (see below), whose sum is σ = 223710336. Its totient is φ = 62140800.

The previous prime is 136451891. The next prime is 136451899. The reversal of 136451894 is 498154631.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136451891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63677 + ... + 65784.

It is an arithmetic number, because the mean of its divisors is an integer number (13981896).

Almost surely, 2^136451894 is an apocalyptic number.

136451894 is a deficient number, since it is larger than the sum of its proper divisors (87258442).

136451894 is a wasteful number, since it uses less digits than its factorization.

136451894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129511.

The product of its digits is 103680, while the sum is 41.

The square root of 136451894 is about 11681.2625173823. The cubic root of 136451894 is about 514.8252701614.

The spelling of 136451894 in words is "one hundred thirty-six million, four hundred fifty-one thousand, eight hundred ninety-four".