1117872438 has 16 divisors (see below), whose sum is σ = 2236085040. Its totient is φ = 372567456.

The previous prime is 1117872407. The next prime is 1117872443. The reversal of 1117872438 is 8342787111.

It is a self number, because there is not a number n which added to its sum of digits gives 1117872438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53148 + ... + 71136.

It is an arithmetic number, because the mean of its divisors is an integer number (139755315).

Almost surely, 2^1117872438 is an apocalyptic number.

1117872438 is an abundant number, since it is smaller than the sum of its proper divisors (1118212602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1117872438 is a wasteful number, since it uses less digits than its factorization.

1117872438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28351.

The product of its digits is 75264, while the sum is 42.

The square root of 1117872438 is about 33434.5994143791. The cubic root of 1117872438 is about 1037.8408230045.

The spelling of 1117872438 in words is "one billion, one hundred seventeen million, eight hundred seventy-two thousand, four hundred thirty-eight".