2019208742 has 4 divisors (see below), whose sum is σ = 3028813116. Its totient is φ = 1009604370.

The previous prime is 2019208721. The next prime is 2019208753. The reversal of 2019208742 is 2478029102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504802184 + ... + 504802187.

It is an arithmetic number, because the mean of its divisors is an integer number (757203279).

Almost surely, 2^2019208742 is an apocalyptic number.

2019208742 is a deficient number, since it is larger than the sum of its proper divisors (1009604374).

2019208742 is a wasteful number, since it uses less digits than its factorization.

2019208742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009604373.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2019208742 is about 44935.6066165797. The cubic root of 2019208742 is about 1263.9417880812.

The spelling of 2019208742 in words is "two billion, nineteen million, two hundred eight thousand, seven hundred forty-two".