964792781 has 2 divisors, whose sum is σ = 964792782. Its totient is φ = 964792780.

The previous prime is 964792769. The next prime is 964792837. The reversal of 964792781 is 187297469.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 659976100 + 304816681 = 25690^2 + 17459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-964792781 is a prime.

It is a super-2 number, since 2×964792781² = 1861650220539427922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (964791781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482396390 + 482396391.

It is an arithmetic number, because the mean of its divisors is an integer number (482396391).

Almost surely, 2^964792781 is an apocalyptic number.

It is an amenable number.

964792781 is a deficient number, since it is larger than the sum of its proper divisors (1).

964792781 is an equidigital number, since it uses as much as digits as its factorization.

964792781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 53.

The square root of 964792781 is about 31061.1136471312. The cubic root of 964792781 is about 988.1237739479.

The spelling of 964792781 in words is "nine hundred sixty-four million, seven hundred ninety-two thousand, seven hundred eighty-one".