8132563940 has 12 divisors (see below), whose sum is σ = 17078384316. Its totient is φ = 3253025568.

The previous prime is 8132563937. The next prime is 8132563961. The reversal of 8132563940 is 493652318.

It can be written as a sum of positive squares in 2 ways, for example, as 903483364 + 7229080576 = 30058^2 + 85024^2 .

It is a super-2 number, since 2×8132563940² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203314079 + ... + 203314118.

It is an arithmetic number, because the mean of its divisors is an integer number (1423198693).

Almost surely, 2^8132563940 is an apocalyptic number.

It is an amenable number.

8132563940 is an abundant number, since it is smaller than the sum of its proper divisors (8945820376).

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

8132563940 is a wasteful number, since it uses less digits than its factorization.

8132563940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406628206 (or 406628204 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 8132563940 is about 90180.7293161904. The cubic root of 8132563940 is about 2010.9865325416.

The spelling of 8132563940 in words is "eight billion, one hundred thirty-two million, five hundred sixty-three thousand, nine hundred forty".