1138755312 has 30 divisors (see below), whose sum is σ = 3186933672. Its totient is φ = 379585056.

The previous prime is 1138755307. The next prime is 1138755313. The reversal of 1138755312 is 2135578311.

It is a happy number.

1138755312 is a `hidden beast` number, since 1 + 13 + 87 + 553 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138755313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3953868 + ... + 3954155.

Almost surely, 2^1138755312 is an apocalyptic number.

1138755312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1138755312 is an abundant number, since it is smaller than the sum of its proper divisors (2048178360).

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

1138755312 is a wasteful number, since it uses less digits than its factorization.

1138755312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908037 (or 7908028 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 1138755312 is about 33745.4487597957. The cubic root of 1138755312 is about 1044.2635966272.

The spelling of 1138755312 in words is "one billion, one hundred thirty-eight million, seven hundred fifty-five thousand, three hundred twelve".