2645205654 has 64 divisors (see below), whose sum is σ = 6517486080. Its totient is φ = 696971520.

The previous prime is 2645205649. The next prime is 2645205659. The reversal of 2645205654 is 4565025462.

2645205654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2645205649) and next prime (2645205659).

It is a super-2 number, since 2×2645205654² = 13994225903907135432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645205659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 877009 + ... + 880019.

It is an arithmetic number, because the mean of its divisors is an integer number (101835720).

Almost surely, 2^2645205654 is an apocalyptic number.

2645205654 is an abundant number, since it is smaller than the sum of its proper divisors (3872280426).

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

2645205654 is a wasteful number, since it uses less digits than its factorization.

2645205654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645.

The product of its (nonzero) digits is 288000, while the sum is 39.

The square root of 2645205654 is about 51431.5628189539. The cubic root of 2645205654 is about 1382.9924655401.

The spelling of 2645205654 in words is "two billion, six hundred forty-five million, two hundred five thousand, six hundred fifty-four".