1043644402 has 32 divisors (see below), whose sum is σ = 1644390720. Its totient is φ = 496130880.

The previous prime is 1043644379. The next prime is 1043644403. The reversal of 1043644402 is 2044463401.

It is not an unprimeable number, because it can be changed into a prime (1043644403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309068 + ... + 1309864.

It is an arithmetic number, because the mean of its divisors is an integer number (51387210).

Almost surely, 2^1043644402 is an apocalyptic number.

1043644402 is a deficient number, since it is larger than the sum of its proper divisors (600746318).

1043644402 is a wasteful number, since it uses less digits than its factorization.

1043644402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 1043644402 is about 32305.4856332481. The cubic root of 1043644402 is about 1014.3414729136.

The spelling of 1043644402 in words is "one billion, forty-three million, six hundred forty-four thousand, four hundred two".