7391280981 has 48 divisors (see below), whose sum is σ = 11615304960. Its totient is φ = 4168120320.

The previous prime is 7391280947. The next prime is 7391280997. The reversal of 7391280981 is 1890821937.

It is not a de Polignac number, because 7391280981 - 2⁶ = 7391280917 is a prime.

It is a super-2 number, since 2×7391280981² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7391280981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7391280931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8112916 + ... + 8113826.

It is an arithmetic number, because the mean of its divisors is an integer number (241985520).

Almost surely, 2^7391280981 is an apocalyptic number.

It is an amenable number.

7391280981 is a deficient number, since it is larger than the sum of its proper divisors (4224023979).

7391280981 is a wasteful number, since it uses less digits than its factorization.

7391280981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 7391280981 is about 85972.5594652154. The cubic root of 7391280981 is about 1947.9295122856.

The spelling of 7391280981 in words is "seven billion, three hundred ninety-one million, two hundred eighty thousand, nine hundred eighty-one".