136947851 has 2 divisors, whose sum is σ = 136947852. Its totient is φ = 136947850.

The previous prime is 136947827. The next prime is 136947857. The reversal of 136947851 is 158749631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136947851 - 2⁶ = 136947787 is a prime.

It is not a weakly prime, because it can be changed into another prime (136947857) 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 as a sum of consecutive naturals, namely, 68473925 + 68473926.

It is an arithmetic number, because the mean of its divisors is an integer number (68473926).

Almost surely, 2^136947851 is an apocalyptic number.

136947851 is a deficient number, since it is larger than the sum of its proper divisors (1).

136947851 is an equidigital number, since it uses as much as digits as its factorization.

136947851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 136947851 is about 11702.4720038118. The cubic root of 136947851 is about 515.4482552158.

The spelling of 136947851 in words is "one hundred thirty-six million, nine hundred forty-seven thousand, eight hundred fifty-one".