19802201429 has 4 divisors (see below), whose sum is σ = 19804214976. Its totient is φ = 19800187884.

The previous prime is 19802201423. The next prime is 19802201431. The reversal of 19802201429 is 92410220891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92410220891 = 15877 ⋅5820383.

It is a cyclic number.

It is not a de Polignac number, because 19802201429 - 2¹² = 19802197333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19802201392 and 19802201401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19802201423) 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, 991949 + ... + 1011714.

It is an arithmetic number, because the mean of its divisors is an integer number (4951053744).

Almost surely, 2^19802201429 is an apocalyptic number.

It is an amenable number.

19802201429 is a deficient number, since it is larger than the sum of its proper divisors (2013547).

19802201429 is an equidigital number, since it uses as much as digits as its factorization.

19802201429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013546.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 19802201429 in words is "nineteen billion, eight hundred two million, two hundred one thousand, four hundred twenty-nine".