2881649634 has 24 divisors (see below), whose sum is σ = 6122262768. Its totient is φ = 904046400.

The previous prime is 2881649633. The next prime is 2881649647. The reversal of 2881649634 is 4369461882.

It is a super-2 number, since 2×2881649634² = 16607809226264667912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2881649633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 829192 + ... + 832659.

It is an arithmetic number, because the mean of its divisors is an integer number (255094282).

Almost surely, 2^2881649634 is an apocalyptic number.

2881649634 is an abundant number, since it is smaller than the sum of its proper divisors (3240613134).

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

2881649634 is a wasteful number, since it uses less digits than its factorization.

2881649634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661890 (or 1661873 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 2881649634 is about 53680.9988170861. The cubic root of 2881649634 is about 1423.0289168049.

The spelling of 2881649634 in words is "two billion, eight hundred eighty-one million, six hundred forty-nine thousand, six hundred thirty-four".