1133381376 has 72 divisors (see below), whose sum is σ = 3351628560. Its totient is φ = 377791488.

The previous prime is 1133381363. The next prime is 1133381423. The reversal of 1133381376 is 6731833311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1133381376.

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, 75075 + ... + 88898.

Almost surely, 2^1133381376 is an apocalyptic number.

1133381376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1133381376 is an abundant number, since it is smaller than the sum of its proper divisors (2218247184).

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

1133381376 is an equidigital number, since it uses as much as digits as its factorization.

1133381376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163998 (or 163978 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 1133381376 is about 33665.7299935706. The cubic root of 1133381376 is about 1042.6183334440.

The spelling of 1133381376 in words is "one billion, one hundred thirty-three million, three hundred eighty-one thousand, three hundred seventy-six".