236564149 has 2 divisors, whose sum is σ = 236564150. Its totient is φ = 236564148.

The previous prime is 236564147. The next prime is 236564183. The reversal of 236564149 is 941465632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229371025 + 7193124 = 15145^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 236564149 - 2¹ = 236564147 is a prime.

Together with 236564147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236564147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118282074 + 118282075.

It is an arithmetic number, because the mean of its divisors is an integer number (118282075).

Almost surely, 2^236564149 is an apocalyptic number.

It is an amenable number.

236564149 is a deficient number, since it is larger than the sum of its proper divisors (1).

236564149 is an equidigital number, since it uses as much as digits as its factorization.

236564149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 236564149 is about 15380.6420217103. The cubic root of 236564149 is about 618.4666836935.

The spelling of 236564149 in words is "two hundred thirty-six million, five hundred sixty-four thousand, one hundred forty-nine".