19470145142989 has 16 divisors (see below), whose sum is σ = 19976319232128. Its totient is φ = 18969341856192.

The previous prime is 19470145142977. The next prime is 19470145143011. The reversal of 19470145142989 is 98924154107491.

It is a cyclic number.

It is not a de Polignac number, because 19470145142989 - 2⁵ = 19470145142957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19470145142989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19470145142689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7721254 + ... + 9927640.

It is an arithmetic number, because the mean of its divisors is an integer number (1248519952008).

Almost surely, 2^{19470145142989} is an apocalyptic number.

It is an amenable number.

19470145142989 is a deficient number, since it is larger than the sum of its proper divisors (506174089139).

19470145142989 is a wasteful number, since it uses less digits than its factorization.

19470145142989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207604.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 19470145142989 in words is "nineteen trillion, four hundred seventy billion, one hundred forty-five million, one hundred forty-two thousand, nine hundred eighty-nine".