2645038620 has 108 divisors (see below), whose sum is σ = 9333238824. Its totient is φ = 604578240.

The previous prime is 2645038589. The next prime is 2645038631. The reversal of 2645038620 is 268305462.

2645038620 is a `hidden beast` number, since 2 + 645 + 0 + 3 + 8 + 6 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141126 + ... + 158765.

It is an arithmetic number, because the mean of its divisors is an integer number (86418878).

Almost surely, 2^2645038620 is an apocalyptic number.

2645038620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2645038620 is an abundant number, since it is smaller than the sum of its proper divisors (6688200204).

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

2645038620 is a wasteful number, since it uses less digits than its factorization.

2645038620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299920 (or 299908 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2645038620 is about 51429.9389461041. The cubic root of 2645038620 is about 1382.9633548072.

The spelling of 2645038620 in words is "two billion, six hundred forty-five million, thirty-eight thousand, six hundred twenty".