1138925724 has 12 divisors (see below), whose sum is σ = 2657493384. Its totient is φ = 379641904.

The previous prime is 1138925717. The next prime is 1138925731. The reversal of 1138925724 is 4275298311.

It is an interprime number because it is at equal distance from previous prime (1138925717) and next prime (1138925731).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47455227 + ... + 47455250.

It is an arithmetic number, because the mean of its divisors is an integer number (221457782).

Almost surely, 2^1138925724 is an apocalyptic number.

It is an amenable number.

1138925724 is an abundant number, since it is smaller than the sum of its proper divisors (1518567660).

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

1138925724 is a wasteful number, since it uses less digits than its factorization.

1138925724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94910484 (or 94910482 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 1138925724 is about 33747.9736280565. The cubic root of 1138925724 is about 1044.3156845428.

The spelling of 1138925724 in words is "one billion, one hundred thirty-eight million, nine hundred twenty-five thousand, seven hundred twenty-four".