19850804629 has 4 divisors (see below), whose sum is σ = 20895583840. Its totient is φ = 18806025420.

The previous prime is 19850804573. The next prime is 19850804651. The reversal of 19850804629 is 92640805891.

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.

It is a cyclic number.

It is not a de Polignac number, because 19850804629 - 2²⁵ = 19817250197 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 (19850807629) 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, 522389577 + ... + 522389614.

It is an arithmetic number, because the mean of its divisors is an integer number (5223895960).

Almost surely, 2^19850804629 is an apocalyptic number.

19850804629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19850804629 is a deficient number, since it is larger than the sum of its proper divisors (1044779211).

19850804629 is a wasteful number, since it uses less digits than its factorization.

19850804629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044779210.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 19850804629 in words is "nineteen billion, eight hundred fifty million, eight hundred four thousand, six hundred twenty-nine".