1181858855452 has 24 divisors (see below), whose sum is σ = 2266215557760. Its totient is φ = 534842008560.

The previous prime is 1181858855393. The next prime is 1181858855549. The reversal of 1181858855452 is 2545588581811.

It is a happy number.

It is a super-2 number, since 2×1181858855452² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59153952 + ... + 59173927.

It is an arithmetic number, because the mean of its divisors is an integer number (94425648240).

Almost surely, 2^{1181858855452} is an apocalyptic number.

It is an amenable number.

1181858855452 is a deficient number, since it is larger than the sum of its proper divisors (1084356702308).

1181858855452 is a wasteful number, since it uses less digits than its factorization.

1181858855452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118328121 (or 118328119 counting only the distinct ones).

The product of its digits is 20480000, while the sum is 61.

The spelling of 1181858855452 in words is "one trillion, one hundred eighty-one billion, eight hundred fifty-eight million, eight hundred fifty-five thousand, four hundred fifty-two".