791318540 has 24 divisors (see below), whose sum is σ = 1684536000. Its totient is φ = 312190848.

The previous prime is 791318513. The next prime is 791318543. The reversal of 791318540 is 45813197.

It is a junction number, because it is equal to n+sod(n) for n = 791318494 and 791318503.

It is not an unprimeable number, because it can be changed into a prime (791318543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269540 + ... + 272459.

It is an arithmetic number, because the mean of its divisors is an integer number (70189000).

Almost surely, 2^791318540 is an apocalyptic number.

It is an amenable number.

791318540 is an abundant number, since it is smaller than the sum of its proper divisors (893217460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791318540 is a wasteful number, since it uses less digits than its factorization.

791318540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542081 (or 542079 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 791318540 is about 28130.3846401005. The cubic root of 791318540 is about 924.9475655693.

The spelling of 791318540 in words is "seven hundred ninety-one million, three hundred eighteen thousand, five hundred forty".