20193001899 has 16 divisors (see below), whose sum is σ = 30831478272. Its totient is φ = 11515912128.

The previous prime is 20193001891. The next prime is 20193001903. The reversal of 20193001899 is 99810039102.

It is not a de Polignac number, because 20193001899 - 2³ = 20193001891 is a prime.

It is a super-3 number, since 3×20193001899³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20193001899.

It is not an unprimeable number, because it can be changed into a prime (20193001891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945274 + ... + 966399.

It is an arithmetic number, because the mean of its divisors is an integer number (1926967392).

Almost surely, 2^20193001899 is an apocalyptic number.

20193001899 is a deficient number, since it is larger than the sum of its proper divisors (10638476373).

20193001899 is a wasteful number, since it uses less digits than its factorization.

20193001899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912186.

The product of its (nonzero) digits is 34992, while the sum is 42.

The spelling of 20193001899 in words is "twenty billion, one hundred ninety-three million, one thousand, eight hundred ninety-nine".