2044400642 has 8 divisors (see below), whose sum is σ = 3131847936. Its totient is φ = 1000451332.

The previous prime is 2044400629. The next prime is 2044400651. The reversal of 2044400642 is 2460044402.

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, 10874378 + ... + 10874565.

It is an arithmetic number, because the mean of its divisors is an integer number (391480992).

Almost surely, 2^2044400642 is an apocalyptic number.

2044400642 is a deficient number, since it is larger than the sum of its proper divisors (1087447294).

2044400642 is a wasteful number, since it uses less digits than its factorization.

2044400642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21748992.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2044400642 is about 45215.0488443837. The cubic root of 2044400642 is about 1269.1764437650.

The spelling of 2044400642 in words is "two billion, forty-four million, four hundred thousand, six hundred forty-two".