2180939004 has 18 divisors (see below), whose sum is σ = 5512929240. Its totient is φ = 726979656.

The previous prime is 2180938999. The next prime is 2180939009. The reversal of 2180939004 is 4009390812.

It is an interprime number because it is at equal distance from previous prime (2180938999) and next prime (2180939009).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 60581639 = 2180939004 / (2 + 1 + 8 + 0 + 9 + 3 + 9 + 0 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 2180939004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180939009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30290784 + ... + 30290855.

Almost surely, 2^2180939004 is an apocalyptic number.

It is an amenable number.

2180939004 is an abundant number, since it is smaller than the sum of its proper divisors (3331990236).

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

2180939004 is a wasteful number, since it uses less digits than its factorization.

2180939004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60581649 (or 60581644 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2180939004 is about 46700.5246651470. The cubic root of 2180939004 is about 1296.8243997475.

The spelling of 2180939004 in words is "two billion, one hundred eighty million, nine hundred thirty-nine thousand, four".