2018372690 has 8 divisors (see below), whose sum is σ = 3633070860. Its totient is φ = 807349072.

The previous prime is 2018372687. The next prime is 2018372749. The reversal of 2018372690 is 962738102.

It can be written as a sum of positive squares in 2 ways, for example, as 1932569521 + 85803169 = 43961^2 + 9263^2 .

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

It is a super-2 number, since 2×2018372690² = 8147656631475672200, which contains 22 as substring.

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, 100918625 + ... + 100918644.

Almost surely, 2^2018372690 is an apocalyptic number.

2018372690 is a deficient number, since it is larger than the sum of its proper divisors (1614698170).

2018372690 is a wasteful number, since it uses less digits than its factorization.

2018372690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201837276.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2018372690 is about 44926.3028748193. The cubic root of 2018372690 is about 1263.7673192548.

The spelling of 2018372690 in words is "two billion, eighteen million, three hundred seventy-two thousand, six hundred ninety".