1138698072 has 24 divisors (see below), whose sum is σ = 3083974140. Its totient is φ = 379566000.

The previous prime is 1138698059. The next prime is 1138698083. The reversal of 1138698072 is 2708968311.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 7907554 + ... + 7907697.

Almost surely, 2^1138698072 is an apocalyptic number.

1138698072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1138698072 is an abundant number, since it is smaller than the sum of its proper divisors (1945276068).

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

1138698072 is a wasteful number, since it uses less digits than its factorization.

1138698072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15815263 (or 15815256 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1138698072 is about 33744.6006347682. The cubic root of 1138698072 is about 1044.2460995556.

The spelling of 1138698072 in words is "one billion, one hundred thirty-eight million, six hundred ninety-eight thousand, seventy-two".