1149317804538 has 40 divisors (see below), whose sum is σ = 2575666579860. Its totient is φ = 383054857920.

The previous prime is 1149317804507. The next prime is 1149317804581. The reversal of 1149317804538 is 8354087139411.

1149317804538 is a `hidden beast` number, since 1 + 1 + 4 + 9 + 31 + 78 + 0 + 4 + 538 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1077998363289 + 71319441249 = 1038267^2 + 267057^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 755728 + ... + 1694036.

Almost surely, 2^{1149317804538} is an apocalyptic number.

1149317804538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1149317804538 is an abundant number, since it is smaller than the sum of its proper divisors (1426348775322).

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

1149317804538 is an equidigital number, since it uses as much as digits as its factorization.

1149317804538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945884 (or 945875 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1149317804538 in words is "one trillion, one hundred forty-nine billion, three hundred seventeen million, eight hundred four thousand, five hundred thirty-eight".