19423462494 has 8 divisors (see below), whose sum is σ = 38846925000. Its totient is φ = 6474487496.

The previous prime is 19423462459. The next prime is 19423462571. The reversal of 19423462494 is 49426432491.

It is a happy number.

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

19423462494 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618621869 + ... + 1618621880.

It is an arithmetic number, because the mean of its divisors is an integer number (4855865625).

Almost surely, 2^19423462494 is an apocalyptic number.

19423462494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19423462494 is a wasteful number, since it uses less digits than its factorization.

19423462494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237243754.

The product of its digits is 1492992, while the sum is 48.

The spelling of 19423462494 in words is "nineteen billion, four hundred twenty-three million, four hundred sixty-two thousand, four hundred ninety-four".