1181390453120 has 32 divisors (see below), whose sum is σ = 2824261553520. Its totient is φ = 472556180992.

The previous prime is 1181390453057. The next prime is 1181390453129. The reversal of 1181390453120 is 213540931811.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181390453129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922960652 + ... + 922961931.

Almost surely, 2^{1181390453120} is an apocalyptic number.

1181390453120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1181390453120 is an abundant number, since it is smaller than the sum of its proper divisors (1642871100400).

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

1181390453120 is an equidigital number, since it uses as much as digits as its factorization.

1181390453120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845922602 (or 1845922590 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 1181390453120 in words is "one trillion, one hundred eighty-one billion, three hundred ninety million, four hundred fifty-three thousand, one hundred twenty".