2163738986 has 8 divisors (see below), whose sum is σ = 3282076260. Its totient is φ = 1069713568.

The previous prime is 2163738959. The next prime is 2163739009. The reversal of 2163738986 is 6898373612.

It can be written as a sum of positive squares in 2 ways, for example, as 1704451225 + 459287761 = 41285^2 + 21431^2 .

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, 6077741 + ... + 6078096.

Almost surely, 2^2163738986 is an apocalyptic number.

2163738986 is a deficient number, since it is larger than the sum of its proper divisors (1118337274).

2163738986 is a wasteful number, since it uses less digits than its factorization.

2163738986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12155928.

The product of its digits is 2612736, while the sum is 53.

The square root of 2163738986 is about 46516.0078467617. The cubic root of 2163738986 is about 1293.4062545386.

The spelling of 2163738986 in words is "two billion, one hundred sixty-three million, seven hundred thirty-eight thousand, nine hundred eighty-six".