2875881645 has 128 divisors (see below), whose sum is σ = 6344110080. Its totient is φ = 1203621120.

The previous prime is 2875881641. The next prime is 2875881683. The reversal of 2875881645 is 5461885782.

2875881645 is a `hidden beast` number, since 2 + 8 + 7 + 588 + 16 + 45 = 666.

It is not a de Polignac number, because 2875881645 - 2² = 2875881641 is a prime.

It is a super-3 number, since 3×2875881645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2875881591 and 2875881600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2875881641) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1608442 + ... + 1610228.

It is an arithmetic number, because the mean of its divisors is an integer number (49563360).

Almost surely, 2^2875881645 is an apocalyptic number.

It is an amenable number.

2875881645 is an abundant number, since it is smaller than the sum of its proper divisors (3468228435).

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

2875881645 is a wasteful number, since it uses less digits than its factorization.

2875881645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1946 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 2875881645 is about 53627.2472256408. The cubic root of 2875881645 is about 1422.0788246999.

The spelling of 2875881645 in words is "two billion, eight hundred seventy-five million, eight hundred eighty-one thousand, six hundred forty-five".