4792778491 has 2 divisors, whose sum is σ = 4792778492. Its totient is φ = 4792778490.

The previous prime is 4792778489. The next prime is 4792778509. The reversal of 4792778491 is 1948772974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4792778491 - 2¹ = 4792778489 is a prime.

Together with 4792778489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4792778411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2396389245 + 2396389246.

It is an arithmetic number, because the mean of its divisors is an integer number (2396389246).

Almost surely, 2^4792778491 is an apocalyptic number.

4792778491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4792778491 is an equidigital number, since it uses as much as digits as its factorization.

4792778491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 58.

The square root of 4792778491 is about 69229.8959337655. The cubic root of 4792778491 is about 1686.0189537056.

The spelling of 4792778491 in words is "four billion, seven hundred ninety-two million, seven hundred seventy-eight thousand, four hundred ninety-one".