7761045949 has 2 divisors, whose sum is σ = 7761045950. Its totient is φ = 7761045948.

The previous prime is 7761045931. The next prime is 7761045953. The reversal of 7761045949 is 9495401677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3999677049 + 3761368900 = 63243^2 + 61330^2 .

It is a cyclic number.

It is not a de Polignac number, because 7761045949 - 2²¹ = 7758948797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7761045896 and 7761045905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7761045979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3880522974 + 3880522975.

It is an arithmetic number, because the mean of its divisors is an integer number (3880522975).

Almost surely, 2^7761045949 is an apocalyptic number.

It is an amenable number.

7761045949 is a deficient number, since it is larger than the sum of its proper divisors (1).

7761045949 is an equidigital number, since it uses as much as digits as its factorization.

7761045949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 7761045949 is about 88096.7987443358. The cubic root of 7761045949 is about 1979.8855449434.

The spelling of 7761045949 in words is "seven billion, seven hundred sixty-one million, forty-five thousand, nine hundred forty-nine".