2630345640 has 64 divisors (see below), whose sum is σ = 8498044800. Its totient is φ = 647469312.

The previous prime is 2630345593. The next prime is 2630345659. The reversal of 2630345640 is 465430362.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841500 + ... + 844619.

It is an arithmetic number, because the mean of its divisors is an integer number (132781950).

Almost surely, 2^2630345640 is an apocalyptic number.

2630345640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2630345640 is an abundant number, since it is smaller than the sum of its proper divisors (5867699160).

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

2630345640 is a wasteful number, since it uses less digits than its factorization.

2630345640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686146 (or 1686142 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 2630345640 is about 51286.8954022370. The cubic root of 2630345640 is about 1380.3978479041.

The spelling of 2630345640 in words is "two billion, six hundred thirty million, three hundred forty-five thousand, six hundred forty".