7783974461 has 2 divisors, whose sum is σ = 7783974462. Its totient is φ = 7783974460.

The previous prime is 7783974403. The next prime is 7783974487. The reversal of 7783974461 is 1644793877.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7097220025 + 686754436 = 84245^2 + 26206^2 .

It is a cyclic number.

It is not a de Polignac number, because 7783974461 - 2¹⁰ = 7783973437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7783974397 and 7783974406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7783974661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3891987230 + 3891987231.

It is an arithmetic number, because the mean of its divisors is an integer number (3891987231).

Almost surely, 2^7783974461 is an apocalyptic number.

It is an amenable number.

7783974461 is a deficient number, since it is larger than the sum of its proper divisors (1).

7783974461 is an equidigital number, since it uses as much as digits as its factorization.

7783974461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 56.

The square root of 7783974461 is about 88226.8352656945. The cubic root of 7783974461 is about 1981.8333579313.

The spelling of 7783974461 in words is "seven billion, seven hundred eighty-three million, nine hundred seventy-four thousand, four hundred sixty-one".