19690750355 has 4 divisors (see below), whose sum is σ = 23628900432. Its totient is φ = 15752600280.

The previous prime is 19690750229. The next prime is 19690750379. The reversal of 19690750355 is 55305709691.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19690750355 - 2¹⁴ = 19690733971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969075031 + ... + 1969075040.

It is an arithmetic number, because the mean of its divisors is an integer number (5907225108).

Almost surely, 2^19690750355 is an apocalyptic number.

19690750355 is a deficient number, since it is larger than the sum of its proper divisors (3938150077).

19690750355 is an equidigital number, since it uses as much as digits as its factorization.

19690750355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938150076.

The product of its (nonzero) digits is 1275750, while the sum is 50.

The spelling of 19690750355 in words is "nineteen billion, six hundred ninety million, seven hundred fifty thousand, three hundred fifty-five".