1155420482187 has 8 divisors (see below), whose sum is σ = 1540566729936. Its totient is φ = 770277277952.

The previous prime is 1155420482179. The next prime is 1155420482231. The reversal of 1155420482187 is 7812840245511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155420482187 - 2³ = 1155420482179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155420482287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361423 + ... + 1562519.

It is an arithmetic number, because the mean of its divisors is an integer number (192570841242).

Almost surely, 2^{1155420482187} is an apocalyptic number.

1155420482187 is a deficient number, since it is larger than the sum of its proper divisors (385146247749).

1155420482187 is a wasteful number, since it uses less digits than its factorization.

1155420482187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521757.

The product of its (nonzero) digits is 716800, while the sum is 48.

The spelling of 1155420482187 in words is "one trillion, one hundred fifty-five billion, four hundred twenty million, four hundred eighty-two thousand, one hundred eighty-seven".