19442672829 has 24 divisors (see below), whose sum is σ = 29743721280. Its totient is φ = 12196096128.

The previous prime is 19442672827. The next prime is 19442672833. The reversal of 19442672829 is 92827624491.

It is a happy number.

19442672829 is a `hidden beast` number, since 194 + 426 + 7 + 2 + 8 + 29 = 666.

It is not a de Polignac number, because 19442672829 - 2¹ = 19442672827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19442672827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649224 + ... + 678510.

It is an arithmetic number, because the mean of its divisors is an integer number (1239321720).

Almost surely, 2^19442672829 is an apocalyptic number.

It is an amenable number.

19442672829 is a deficient number, since it is larger than the sum of its proper divisors (10301048451).

19442672829 is a wasteful number, since it uses less digits than its factorization.

19442672829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33649 (or 33646 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 19442672829 in words is "nineteen billion, four hundred forty-two million, six hundred seventy-two thousand, eight hundred twenty-nine".