19493199046 has 16 divisors (see below), whose sum is σ = 29369176128. Its totient is φ = 9703535400.

The previous prime is 19493199013. The next prime is 19493199049. The reversal of 19493199046 is 64099139491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19493199049) 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, 648081 + ... + 677491.

It is an arithmetic number, because the mean of its divisors is an integer number (1835573508).

Almost surely, 2^19493199046 is an apocalyptic number.

19493199046 is a deficient number, since it is larger than the sum of its proper divisors (9875977082).

19493199046 is a wasteful number, since it uses less digits than its factorization.

19493199046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30867.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The spelling of 19493199046 in words is "nineteen billion, four hundred ninety-three million, one hundred ninety-nine thousand, forty-six".