164813237 has 2 divisors, whose sum is σ = 164813238. Its totient is φ = 164813236.

The previous prime is 164813203. The next prime is 164813251. The reversal of 164813237 is 732318461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160757041 + 4056196 = 12679^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 164813237 - 2²² = 160618933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164813197 and 164813206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164813437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82406618 + 82406619.

It is an arithmetic number, because the mean of its divisors is an integer number (82406619).

Almost surely, 2^164813237 is an apocalyptic number.

It is an amenable number.

164813237 is a deficient number, since it is larger than the sum of its proper divisors (1).

164813237 is an equidigital number, since it uses as much as digits as its factorization.

164813237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 164813237 is about 12837.9607804355. The cubic root of 164813237 is about 548.2736359182.

The spelling of 164813237 in words is "one hundred sixty-four million, eight hundred thirteen thousand, two hundred thirty-seven".