1138285368 has 48 divisors (see below), whose sum is σ = 3363118200. Its totient is φ = 344934720.

The previous prime is 1138285349. The next prime is 1138285381. The reversal of 1138285368 is 8635828311.

1138285368 is a `hidden beast` number, since 1 + 1 + 3 + 8 + 285 + 368 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717823 + ... + 719406.

Almost surely, 2^1138285368 is an apocalyptic number.

1138285368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1138285368 is an abundant number, since it is smaller than the sum of its proper divisors (2224832832).

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

1138285368 is a wasteful number, since it uses less digits than its factorization.

1138285368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437252 (or 1437245 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 1138285368 is about 33738.4849689490. The cubic root of 1138285368 is about 1044.1199272105.

The spelling of 1138285368 in words is "one billion, one hundred thirty-eight million, two hundred eighty-five thousand, three hundred sixty-eight".