2086631738 has 4 divisors (see below), whose sum is σ = 3129947610. Its totient is φ = 1043315868.

The previous prime is 2086631713. The next prime is 2086631747. The reversal of 2086631738 is 8371366802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1941019249 + 145612489 = 44057^2 + 12067^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521657933 + ... + 521657936.

Almost surely, 2^2086631738 is an apocalyptic number.

2086631738 is a deficient number, since it is larger than the sum of its proper divisors (1043315872).

2086631738 is a wasteful number, since it uses less digits than its factorization.

2086631738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043315871.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2086631738 is about 45679.6643814291. The cubic root of 2086631738 is about 1277.8560582167.

The spelling of 2086631738 in words is "two billion, eighty-six million, six hundred thirty-one thousand, seven hundred thirty-eight".