2661844831 has 2 divisors, whose sum is σ = 2661844832. Its totient is φ = 2661844830.

The previous prime is 2661844807. The next prime is 2661844847. The reversal of 2661844831 is 1384481662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661844831 is a prime.

It is a super-2 number, since 2×2661844831² = 14170835808642837122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661844331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330922415 + 1330922416.

It is an arithmetic number, because the mean of its divisors is an integer number (1330922416).

Almost surely, 2^2661844831 is an apocalyptic number.

2661844831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661844831 is an equidigital number, since it uses as much as digits as its factorization.

2661844831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 43.

The square root of 2661844831 is about 51593.0696024185. The cubic root of 2661844831 is about 1385.8862258915.

The spelling of 2661844831 in words is "two billion, six hundred sixty-one million, eight hundred forty-four thousand, eight hundred thirty-one".