236968993 has 2 divisors, whose sum is σ = 236968994. Its totient is φ = 236968992.

The previous prime is 236968973. The next prime is 236969003. The reversal of 236968993 is 399869632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234334864 + 2634129 = 15308^2 + 1623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236968993 is a prime.

It is not a weakly prime, because it can be changed into another prime (236968973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118484496 + 118484497.

It is an arithmetic number, because the mean of its divisors is an integer number (118484497).

Almost surely, 2^236968993 is an apocalyptic number.

It is an amenable number.

236968993 is a deficient number, since it is larger than the sum of its proper divisors (1).

236968993 is an equidigital number, since it uses as much as digits as its factorization.

236968993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 55.

The square root of 236968993 is about 15393.7972248565. The cubic root of 236968993 is about 618.8192868981.

The spelling of 236968993 in words is "two hundred thirty-six million, nine hundred sixty-eight thousand, nine hundred ninety-three".