978463081 has 2 divisors, whose sum is σ = 978463082. Its totient is φ = 978463080.

The previous prime is 978462983. The next prime is 978463091. The reversal of 978463081 is 180364879.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824206681 + 154256400 = 28709^2 + 12420^2 .

It is a cyclic number.

It is not a de Polignac number, because 978463081 - 2²⁵ = 944908649 is a prime.

It is a super-2 number, since 2×978463081² = 1914780001760025122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (978463091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489231540 + 489231541.

It is an arithmetic number, because the mean of its divisors is an integer number (489231541).

Almost surely, 2^978463081 is an apocalyptic number.

It is an amenable number.

978463081 is a deficient number, since it is larger than the sum of its proper divisors (1).

978463081 is an equidigital number, since it uses as much as digits as its factorization.

978463081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 978463081 is about 31280.3945147755. The cubic root of 978463081 is about 992.7688637050.

The spelling of 978463081 in words is "nine hundred seventy-eight million, four hundred sixty-three thousand, eighty-one".