1138277760 has 64 divisors (see below), whose sum is σ = 3628266480. Its totient is φ = 303540224.

The previous prime is 1138277743. The next prime is 1138277779. The reversal of 1138277760 is 677728311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294507 + ... + 298346.

Almost surely, 2^1138277760 is an apocalyptic number.

1138277760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138277760 is an abundant number, since it is smaller than the sum of its proper divisors (2489988720).

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

1138277760 is an equidigital number, since it uses as much as digits as its factorization.

1138277760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592875 (or 592863 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 1138277760 is about 33738.3722191809. The cubic root of 1138277760 is about 1044.1176009976.

The spelling of 1138277760 in words is "one billion, one hundred thirty-eight million, two hundred seventy-seven thousand, seven hundred sixty".