2645655474 has 192 divisors, whose sum is σ = 7002132480. Its totient is φ = 647032320.

The previous prime is 2645655469. The next prime is 2645655487. The reversal of 2645655474 is 4745565462.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29726422 + ... + 29726510.

It is an arithmetic number, because the mean of its divisors is an integer number (36469440).

Almost surely, 2^2645655474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645655474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3501066240).

2645655474 is an abundant number, since it is smaller than the sum of its proper divisors (4356477006).

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

2645655474 is a wasteful number, since it uses less digits than its factorization.

2645655474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 196 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 48.

The square root of 2645655474 is about 51435.9356287022. The cubic root of 2645655474 is about 1383.0708542041.

The spelling of 2645655474 in words is "two billion, six hundred forty-five million, six hundred fifty-five thousand, four hundred seventy-four".