19490484231681 has 8 divisors (see below), whose sum is σ = 26009851179360. Its totient is φ = 12982386719232.

The previous prime is 19490484231637. The next prime is 19490484231733. The reversal of 19490484231681 is 18613248409491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19490484231681 - 2¹⁹ = 19490483707393 is a prime.

It is a super-2 number, since 2×19490484231681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19490484236681) 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, 2817354771 + ... + 2817361688.

It is an arithmetic number, because the mean of its divisors is an integer number (3251231397420).

Almost surely, 2^{19490484231681} is an apocalyptic number.

It is an amenable number.

19490484231681 is a deficient number, since it is larger than the sum of its proper divisors (6519366947679).

19490484231681 is a wasteful number, since it uses less digits than its factorization.

19490484231681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634717615.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 19490484231681 in words is "nineteen trillion, four hundred ninety billion, four hundred eighty-four million, two hundred thirty-one thousand, six hundred eighty-one".