2111640884 has 6 divisors (see below), whose sum is σ = 3695371554. Its totient is φ = 1055820440.

The previous prime is 2111640877. The next prime is 2111640889. The reversal of 2111640884 is 4880461112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2095075984 + 16564900 = 45772^2 + 4070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111640889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263955107 + ... + 263955114.

It is an arithmetic number, because the mean of its divisors is an integer number (615895259).

Almost surely, 2^2111640884 is an apocalyptic number.

It is an amenable number.

2111640884 is a deficient number, since it is larger than the sum of its proper divisors (1583730670).

2111640884 is a wasteful number, since it uses less digits than its factorization.

2111640884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527910225 (or 527910223 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 2111640884 is about 45952.5938767334. The cubic root of 2111640884 is about 1282.9410083751.

The spelling of 2111640884 in words is "two billion, one hundred eleven million, six hundred forty thousand, eight hundred eighty-four".