19133429821 has 8 divisors (see below), whose sum is σ = 20878704288. Its totient is φ = 17389134000.

The previous prime is 19133429767. The next prime is 19133429831. The reversal of 19133429821 is 12892433191.

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

It is a cyclic number.

It is not a de Polignac number, because 19133429821 - 2²¹ = 19131332669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19133429831) 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, 203475 + ... + 282256.

It is an arithmetic number, because the mean of its divisors is an integer number (2609838036).

Almost surely, 2^19133429821 is an apocalyptic number.

19133429821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19133429821 is a deficient number, since it is larger than the sum of its proper divisors (1745274467).

19133429821 is a wasteful number, since it uses less digits than its factorization.

19133429821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489323.

The product of its digits is 93312, while the sum is 43.

The spelling of 19133429821 in words is "nineteen billion, one hundred thirty-three million, four hundred twenty-nine thousand, eight hundred twenty-one".