76148981 has 2 divisors, whose sum is σ = 76148982. Its totient is φ = 76148980.

The previous prime is 76148957. The next prime is 76148987. The reversal of 76148981 is 18984167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52432081 + 23716900 = 7241^2 + 4870^2 .

It is a cyclic number.

It is not a de Polignac number, because 76148981 - 2²⁶ = 9040117 is a prime.

It is a super-2 number, since 2×76148981² = 11597334614676722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76148987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38074490 + 38074491.

It is an arithmetic number, because the mean of its divisors is an integer number (38074491).

Almost surely, 2^76148981 is an apocalyptic number.

It is an amenable number.

76148981 is a deficient number, since it is larger than the sum of its proper divisors (1).

76148981 is an equidigital number, since it uses as much as digits as its factorization.

76148981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 44.

The square root of 76148981 is about 8726.3383500756. The cubic root of 76148981 is about 423.8589572558.

The spelling of 76148981 in words is "seventy-six million, one hundred forty-eight thousand, nine hundred eighty-one".