1180832128921 has 9 divisors (see below), whose sum is σ = 1183892458581. Its totient is φ = 1177779698172.

The previous prime is 1180832128913. The next prime is 1180832129003. The reversal of 1180832128921 is 1298212380811.

The square root of 1180832128921 is 1086661.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1180832128921 - 2³ = 1180832128913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180832158921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 503122870 + ... + 503125216.

It is an arithmetic number, because the mean of its divisors is an integer number (131543606509).

Almost surely, 2^{1180832128921} is an apocalyptic number.

1180832128921 is the 1086661-st square number.

1180832128921 is the 543331-st centered octagonal number.

It is an amenable number.

1180832128921 is a deficient number, since it is larger than the sum of its proper divisors (3060329660).

1180832128921 is an frugal number, since it uses more digits than its factorization.

1180832128921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620 (or 2810 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 1180832128921 in words is "one trillion, one hundred eighty billion, eight hundred thirty-two million, one hundred twenty-eight thousand, nine hundred twenty-one".