2811649036 has 48 divisors (see below), whose sum is σ = 5815183360. Its totient is φ = 1164015360.

The previous prime is 2811649033. The next prime is 2811649069. The reversal of 2811649036 is 6309461182.

It is a self number, because there is not a number n which added to its sum of digits gives 2811649036.

It is not an unprimeable number, because it can be changed into a prime (2811649033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534676 + ... + 539908.

Almost surely, 2^2811649036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2811649036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2907591680).

2811649036 is an abundant number, since it is smaller than the sum of its proper divisors (3003534324).

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

2811649036 is a wasteful number, since it uses less digits than its factorization.

2811649036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5894 (or 5892 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2811649036 is about 53024.9850164995. The cubic root of 2811649036 is about 1411.4116666886.

The spelling of 2811649036 in words is "two billion, eight hundred eleven million, six hundred forty-nine thousand, thirty-six".