461111813 has 2 divisors, whose sum is σ = 461111814. Its totient is φ = 461111812.

The previous prime is 461111809. The next prime is 461111821. The reversal of 461111813 is 318111164.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460402849 + 708964 = 21457^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 461111813 - 2² = 461111809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461111863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230555906 + 230555907.

It is an arithmetic number, because the mean of its divisors is an integer number (230555907).

Almost surely, 2^461111813 is an apocalyptic number.

It is an amenable number.

461111813 is a deficient number, since it is larger than the sum of its proper divisors (1).

461111813 is an equidigital number, since it uses as much as digits as its factorization.

461111813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 26.

The square root of 461111813 is about 21473.5142210119. The cubic root of 461111813 is about 772.5656883916.

Adding to 461111813 its reverse (318111164), we get a palindrome (779222977).

The spelling of 461111813 in words is "four hundred sixty-one million, one hundred eleven thousand, eight hundred thirteen".