1138548772 has 12 divisors (see below), whose sum is σ = 2007670896. Its totient is φ = 564928520.

The previous prime is 1138548767. The next prime is 1138548773. The reversal of 1138548772 is 2778458311.

It is not an unprimeable number, because it can be changed into a prime (1138548773) by changing a digit.

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, 1085878 + ... + 1086925.

It is an arithmetic number, because the mean of its divisors is an integer number (167305908).

Almost surely, 2^1138548772 is an apocalyptic number.

It is an amenable number.

1138548772 is a deficient number, since it is larger than the sum of its proper divisors (869122124).

1138548772 is a wasteful number, since it uses less digits than its factorization.

1138548772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172938 (or 2172936 counting only the distinct ones).

The product of its digits is 376320, while the sum is 46.

The square root of 1138548772 is about 33742.3883564872. The cubic root of 1138548772 is about 1044.2004589066.

The spelling of 1138548772 in words is "one billion, one hundred thirty-eight million, five hundred forty-eight thousand, seven hundred seventy-two".