1185134388243 has 16 divisors (see below), whose sum is σ = 1723272337920. Its totient is φ = 720081651744.

The previous prime is 1185134388239. The next prime is 1185134388257. The reversal of 1185134388243 is 3428834315811.

It is not a de Polignac number, because 1185134388243 - 2² = 1185134388239 is a prime.

It is a super-2 number, since 2×1185134388243² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1185134388283) 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, 192326421 + ... + 192332582.

It is an arithmetic number, because the mean of its divisors is an integer number (107704521120).

Almost surely, 2^{1185134388243} is an apocalyptic number.

1185134388243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1185134388243 is a deficient number, since it is larger than the sum of its proper divisors (538137949677).

1185134388243 is a wasteful number, since it uses less digits than its factorization.

1185134388243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384659098.

The product of its digits is 2211840, while the sum is 51.

The spelling of 1185134388243 in words is "one trillion, one hundred eighty-five billion, one hundred thirty-four million, three hundred eighty-eight thousand, two hundred forty-three".