18434397489292 has 12 divisors (see below), whose sum is σ = 32702116094536. Its totient is φ = 9090935748000.

The previous prime is 18434397489199. The next prime is 18434397489329. The reversal of 18434397489292 is 29298479343481.

It is a super-2 number, since 2×18434397489292² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (73).

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 3 ways as a sum of consecutive naturals, for example, 31565748834 + ... + 31565749417.

Almost surely, 2^{18434397489292} is an apocalyptic number.

It is an amenable number.

18434397489292 is a deficient number, since it is larger than the sum of its proper divisors (14267718605244).

18434397489292 is a wasteful number, since it uses less digits than its factorization.

18434397489292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63131498328 (or 63131498326 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 73.

The spelling of 18434397489292 in words is "eighteen trillion, four hundred thirty-four billion, three hundred ninety-seven million, four hundred eighty-nine thousand, two hundred ninety-two".