464561018893 has 2 divisors, whose sum is σ = 464561018894. Its totient is φ = 464561018892.

The previous prime is 464561018839. The next prime is 464561018897. The reversal of 464561018893 is 398810165464.

Together with previous prime (464561018839) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383722019209 + 80838999684 = 619453^2 + 284322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464561018893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464561018897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232280509446 + 232280509447.

It is an arithmetic number, because the mean of its divisors is an integer number (232280509447).

Almost surely, 2^464561018893 is an apocalyptic number.

It is an amenable number.

464561018893 is a deficient number, since it is larger than the sum of its proper divisors (1).

464561018893 is an equidigital number, since it uses as much as digits as its factorization.

464561018893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 464561018893 in words is "four hundred sixty-four billion, five hundred sixty-one million, eighteen thousand, eight hundred ninety-three".