1120644406 has 24 divisors (see below), whose sum is σ = 1997022816. Its totient is φ = 470055600.

The previous prime is 1120644401. The next prime is 1120644443. The reversal of 1120644406 is 6044460211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120644401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117045 + ... + 126256.

It is an arithmetic number, because the mean of its divisors is an integer number (83209284).

Almost surely, 2^1120644406 is an apocalyptic number.

1120644406 is a deficient number, since it is larger than the sum of its proper divisors (876378410).

1120644406 is a wasteful number, since it uses less digits than its factorization.

1120644406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243364 (or 243357 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1120644406 is about 33476.0273330035. The cubic root of 1120644406 is about 1038.6979532764.

The spelling of 1120644406 in words is "one billion, one hundred twenty million, six hundred forty-four thousand, four hundred six".