18434397489342 has 16 divisors (see below), whose sum is σ = 37283051103120. Its totient is φ = 6075756475712.

The previous prime is 18434397489329. The next prime is 18434397489349. The reversal of 18434397489342 is 24398479343481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434397489349) 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, 17260671273 + ... + 17260672340.

It is an arithmetic number, because the mean of its divisors is an integer number (2330190693945).

Almost surely, 2^{18434397489342} is an apocalyptic number.

18434397489342 is an abundant number, since it is smaller than the sum of its proper divisors (18848653613778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18434397489342 is a wasteful number, since it uses less digits than its factorization.

18434397489342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34521343707.

The product of its digits is 501645312, while the sum is 69.

The spelling of 18434397489342 in words is "eighteen trillion, four hundred thirty-four billion, three hundred ninety-seven million, four hundred eighty-nine thousand, three hundred forty-two".