20248018449 has 16 divisors (see below), whose sum is σ = 27350968320. Its totient is φ = 13322022480.

The previous prime is 20248018423. The next prime is 20248018451. The reversal of 20248018449 is 94481084202.

It is not a de Polignac number, because 20248018449 - 2²⁸ = 19979582993 is a prime.

It is a super-2 number, since 2×20248018449² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20248018449.

It is not an unprimeable number, because it can be changed into a prime (20248018459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567364 + ... + 601994.

It is an arithmetic number, because the mean of its divisors is an integer number (1709435520).

Almost surely, 2^20248018449 is an apocalyptic number.

It is an amenable number.

20248018449 is a deficient number, since it is larger than the sum of its proper divisors (7102949871).

20248018449 is a wasteful number, since it uses less digits than its factorization.

20248018449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37180.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 20248018449 in words is "twenty billion, two hundred forty-eight million, eighteen thousand, four hundred forty-nine".