19875642362 has 8 divisors (see below), whose sum is σ = 30841514100. Its totient is φ = 9595137664.

The previous prime is 19875642337. The next prime is 19875642389. The reversal of 19875642362 is 26324657891.

It is a Cunningham number, because it is equal to 140981²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 19875642361 + 1 = 140981^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171341687 + ... + 171341802.

Almost surely, 2^19875642362 is an apocalyptic number.

19875642362 is a deficient number, since it is larger than the sum of its proper divisors (10965871738).

19875642362 is a wasteful number, since it uses less digits than its factorization.

19875642362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342683520.

The product of its digits is 4354560, while the sum is 53.

The spelling of 19875642362 in words is "nineteen billion, eight hundred seventy-five million, six hundred forty-two thousand, three hundred sixty-two".