19473227492 has 12 divisors (see below), whose sum is σ = 34104351036. Its totient is φ = 9729127200.

The previous prime is 19473227491. The next prime is 19473227497. The reversal of 19473227492 is 29472237491.

It can be written as a sum of positive squares in 2 ways, for example, as 34175716 + 19439051776 = 5846^2 + 139424^2 .

It is a super-2 number, since 2×19473227492² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19473227492.

It is not an unprimeable number, because it can be changed into a prime (19473227491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865783 + ... + 1876190.

It is an arithmetic number, because the mean of its divisors is an integer number (2842029253).

Almost surely, 2^19473227492 is an apocalyptic number.

It is an amenable number.

19473227492 is a deficient number, since it is larger than the sum of its proper divisors (14631123544).

19473227492 is a wasteful number, since it uses less digits than its factorization.

19473227492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743278 (or 3743276 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

Subtracting 19473227492 from its reverse (29472237491), we obtain a palindrome (9999009999).

The spelling of 19473227492 in words is "nineteen billion, four hundred seventy-three million, two hundred twenty-seven thousand, four hundred ninety-two".