19653030019 has 8 divisors (see below), whose sum is σ = 23642743040. Its totient is φ = 15958851336.

The previous prime is 19653029999. The next prime is 19653030031. The reversal of 19653030019 is 91003035691.

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

It is not a de Polignac number, because 19653030019 - 2²³ = 19644641411 is a prime.

It is a super-2 number, since 2×19653030019² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19653030019.

It is not an unprimeable number, because it can be changed into a prime (19653030919) 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, 73883439 + ... + 73883704.

It is an arithmetic number, because the mean of its divisors is an integer number (2955342880).

Almost surely, 2^19653030019 is an apocalyptic number.

19653030019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19653030019 is a deficient number, since it is larger than the sum of its proper divisors (3989713021).

19653030019 is a wasteful number, since it uses less digits than its factorization.

19653030019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147767169.

The product of its (nonzero) digits is 21870, while the sum is 37.

The spelling of 19653030019 in words is "nineteen billion, six hundred fifty-three million, thirty thousand, nineteen".