2261349977 has 2 divisors, whose sum is σ = 2261349978. Its totient is φ = 2261349976.

The previous prime is 2261349973. The next prime is 2261349991. The reversal of 2261349977 is 7799431622.

2261349977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2246380816 + 14969161 = 47396^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261349977 - 2² = 2261349973 is a prime.

It is a super-2 number, since 2×2261349977² = 10227407436955801058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2261349973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130674988 + 1130674989.

It is an arithmetic number, because the mean of its divisors is an integer number (1130674989).

Almost surely, 2^2261349977 is an apocalyptic number.

It is an amenable number.

2261349977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261349977 is an equidigital number, since it uses as much as digits as its factorization.

2261349977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 2261349977 is about 47553.6536661485. The cubic root of 2261349977 is about 1312.5703621477.

The spelling of 2261349977 in words is "two billion, two hundred sixty-one million, three hundred forty-nine thousand, nine hundred seventy-seven".