2044642090 has 8 divisors (see below), whose sum is σ = 3680355780. Its totient is φ = 817856832.

The previous prime is 2044642087. The next prime is 2044642091. The reversal of 2044642090 is 902464402.

It can be written as a sum of positive squares in 2 ways, for example, as 1995319561 + 49322529 = 44669^2 + 7023^2 .

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

It is a super-2 number, since 2×2044642090² = 8361122552399136200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2044642091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102232095 + ... + 102232114.

Almost surely, 2^2044642090 is an apocalyptic number.

2044642090 is a deficient number, since it is larger than the sum of its proper divisors (1635713690).

2044642090 is a wasteful number, since it uses less digits than its factorization.

2044642090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204464216.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 2044642090 is about 45217.7187615651. The cubic root of 2044642090 is about 1269.2264059307.

The spelling of 2044642090 in words is "two billion, forty-four million, six hundred forty-two thousand, ninety".