2640245468 has 12 divisors (see below), whose sum is σ = 5280490992. Its totient is φ = 1131533760.

The previous prime is 2640245467. The next prime is 2640245473. The reversal of 2640245468 is 8645420462.

2640245468 is an admirable number.

It is a super-2 number, since 2×2640245468² = 13941792262589078048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640245467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47147213 + ... + 47147268.

It is an arithmetic number, because the mean of its divisors is an integer number (440040916).

Almost surely, 2^2640245468 is an apocalyptic number.

2640245468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2640245468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640245468 is a wasteful number, since it uses less digits than its factorization.

2640245468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94294492 (or 94294490 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 41.

The square root of 2640245468 is about 51383.3189663727. The cubic root of 2640245468 is about 1382.1274802244.

The spelling of 2640245468 in words is "two billion, six hundred forty million, two hundred forty-five thousand, four hundred sixty-eight".