20193058849 has 4 divisors (see below), whose sum is σ = 21255851440. Its totient is φ = 19130266260.

The previous prime is 20193058829. The next prime is 20193058859. The reversal of 20193058849 is 94885039102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20193058849 - 2²³ = 20184670241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20193058819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531396267 + ... + 531396304.

It is an arithmetic number, because the mean of its divisors is an integer number (5313962860).

Almost surely, 2^20193058849 is an apocalyptic number.

It is an amenable number.

20193058849 is a deficient number, since it is larger than the sum of its proper divisors (1062792591).

20193058849 is a wasteful number, since it uses less digits than its factorization.

20193058849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062792590.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 20193058849 in words is "twenty billion, one hundred ninety-three million, fifty-eight thousand, eight hundred forty-nine".