19207143953 has 8 divisors (see below), whose sum is σ = 19476748200. Its totient is φ = 18937715328.

The previous prime is 19207143937. The next prime is 19207144039. The reversal of 19207143953 is 35934170291.

It can be written as a sum of positive squares in 4 ways, for example, as 5502227329 + 13704916624 = 74177^2 + 117068^2 .

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 19207143953 - 2⁴ = 19207143937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19207143253) 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, 184643 + ... + 269271.

It is an arithmetic number, because the mean of its divisors is an integer number (2434593525).

Almost surely, 2^19207143953 is an apocalyptic number.

It is an amenable number.

19207143953 is a deficient number, since it is larger than the sum of its proper divisors (269604247).

19207143953 is an equidigital number, since it uses as much as digits as its factorization.

19207143953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87811.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 19207143953 in words is "nineteen billion, two hundred seven million, one hundred forty-three thousand, nine hundred fifty-three".