971948863 has 2 divisors, whose sum is σ = 971948864. Its totient is φ = 971948862.

The previous prime is 971948843. The next prime is 971948899. The reversal of 971948863 is 368849179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 971948863 - 2²¹ = 969851711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971948843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485974431 + 485974432.

It is an arithmetic number, because the mean of its divisors is an integer number (485974432).

Almost surely, 2^971948863 is an apocalyptic number.

971948863 is a deficient number, since it is larger than the sum of its proper divisors (1).

971948863 is an equidigital number, since it uses as much as digits as its factorization.

971948863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 971948863 is about 31176.0944154331. The cubic root of 971948863 is about 990.5608028973.

The spelling of 971948863 in words is "nine hundred seventy-one million, nine hundred forty-eight thousand, eight hundred sixty-three".