19291996403 has 4 divisors (see below), whose sum is σ = 19315268640. Its totient is φ = 19268724168.

The previous prime is 19291996333. The next prime is 19291996411. The reversal of 19291996403 is 30469919291.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19291996403 - 2¹⁰ = 19291995379 is a prime.

It is a super-2 number, since 2×19291996403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19291996463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11634875 + ... + 11636532.

It is an arithmetic number, because the mean of its divisors is an integer number (4828817160).

Almost surely, 2^19291996403 is an apocalyptic number.

19291996403 is a deficient number, since it is larger than the sum of its proper divisors (23272237).

19291996403 is an equidigital number, since it uses as much as digits as its factorization.

19291996403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23272236.

The product of its (nonzero) digits is 944784, while the sum is 53.

The spelling of 19291996403 in words is "nineteen billion, two hundred ninety-one million, nine hundred ninety-six thousand, four hundred three".