7921149463 has 2 divisors, whose sum is σ = 7921149464. Its totient is φ = 7921149462.

The previous prime is 7921149451. The next prime is 7921149487. The reversal of 7921149463 is 3649411297.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7921149463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7921149413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3960574731 + 3960574732.

It is an arithmetic number, because the mean of its divisors is an integer number (3960574732).

Almost surely, 2^7921149463 is an apocalyptic number.

7921149463 is a deficient number, since it is larger than the sum of its proper divisors (1).

7921149463 is an equidigital number, since it uses as much as digits as its factorization.

7921149463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 7921149463 is about 89000.8396758143. The cubic root of 7921149463 is about 1993.4074147036.

The spelling of 7921149463 in words is "seven billion, nine hundred twenty-one million, one hundred forty-nine thousand, four hundred sixty-three".