2187873722 has 8 divisors (see below), whose sum is σ = 3283687956. Its totient is φ = 1093311072.

The previous prime is 2187873683. The next prime is 2187873757. The reversal of 2187873722 is 2273787812.

It can be written as a sum of positive squares in 2 ways, for example, as 2187339361 + 534361 = 46769^2 + 731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308513 + ... + 315524.

Almost surely, 2^2187873722 is an apocalyptic number.

2187873722 is a deficient number, since it is larger than the sum of its proper divisors (1095814234).

2187873722 is a wasteful number, since it uses less digits than its factorization.

2187873722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625792.

The product of its digits is 526848, while the sum is 47.

The square root of 2187873722 is about 46774.7124202811. The cubic root of 2187873722 is about 1298.1974469401.

The spelling of 2187873722 in words is "two billion, one hundred eighty-seven million, eight hundred seventy-three thousand, seven hundred twenty-two".