1138899774 has 32 divisors (see below), whose sum is σ = 2396304000. Its totient is φ = 360326624.

The previous prime is 1138899757. The next prime is 1138899779. The reversal of 1138899774 is 4779988311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138899779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45204 + ... + 65735.

It is an arithmetic number, because the mean of its divisors is an integer number (74884500).

Almost surely, 2^1138899774 is an apocalyptic number.

1138899774 is an abundant number, since it is smaller than the sum of its proper divisors (1257404226).

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

1138899774 is a wasteful number, since it uses less digits than its factorization.

1138899774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111032.

The product of its digits is 3048192, while the sum is 57.

The square root of 1138899774 is about 33747.5891583384. The cubic root of 1138899774 is about 1044.3077530341.

The spelling of 1138899774 in words is "one billion, one hundred thirty-eight million, eight hundred ninety-nine thousand, seven hundred seventy-four".