1185459874421 has 2 divisors, whose sum is σ = 1185459874422. Its totient is φ = 1185459874420.

The previous prime is 1185459874397. The next prime is 1185459874453. The reversal of 1185459874421 is 1244789545811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022474880625 + 162984993796 = 1011175^2 + 403714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1185459874421 - 2¹⁰ = 1185459873397 is a prime.

It is a super-2 number, since 2×1185459874421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1185459874121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592729937210 + 592729937211.

It is an arithmetic number, because the mean of its divisors is an integer number (592729937211).

Almost surely, 2^{1185459874421} is an apocalyptic number.

It is an amenable number.

1185459874421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185459874421 is an equidigital number, since it uses as much as digits as its factorization.

1185459874421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12902400, while the sum is 59.

The spelling of 1185459874421 in words is "one trillion, one hundred eighty-five billion, four hundred fifty-nine million, eight hundred seventy-four thousand, four hundred twenty-one".