19629434149 has 8 divisors (see below), whose sum is σ = 22382884440. Its totient is φ = 17053625856.

The previous prime is 19629434141. The next prime is 19629434159. The reversal of 19629434149 is 94143492691.

It can be written as a sum of positive squares in 4 ways, for example, as 7882776225 + 11746657924 = 88785^2 + 108382^2 .

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 19629434149 - 2³ = 19629434141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19629434096 and 19629434105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19629434141) 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, 44410264 + ... + 44410705.

It is an arithmetic number, because the mean of its divisors is an integer number (2797860555).

Almost surely, 2^19629434149 is an apocalyptic number.

It is an amenable number.

19629434149 is a deficient number, since it is larger than the sum of its proper divisors (2753450291).

19629434149 is a wasteful number, since it uses less digits than its factorization.

19629434149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88820999.

The product of its digits is 1679616, while the sum is 52.

The spelling of 19629434149 in words is "nineteen billion, six hundred twenty-nine million, four hundred thirty-four thousand, one hundred forty-nine".