1181333944540 has 48 divisors (see below), whose sum is σ = 2566486944000. Its totient is φ = 456214287872.

The previous prime is 1181333944529. The next prime is 1181333944543. The reversal of 1181333944540 is 454493331811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181333944543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13259061 + ... + 13347859.

It is an arithmetic number, because the mean of its divisors is an integer number (53468478000).

Almost surely, 2^{1181333944540} is an apocalyptic number.

1181333944540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1181333944540 is an abundant number, since it is smaller than the sum of its proper divisors (1385152999460).

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

1181333944540 is a wasteful number, since it uses less digits than its factorization.

1181333944540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111774 (or 111772 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 1181333944540 in words is "one trillion, one hundred eighty-one billion, three hundred thirty-three million, nine hundred forty-four thousand, five hundred forty".