20194499481 has 16 divisors (see below), whose sum is σ = 29031272256. Its totient is φ = 12412794816.

The previous prime is 20194499459. The next prime is 20194499497. The reversal of 20194499481 is 18499449102.

It is not a de Polignac number, because 20194499481 - 2⁵ = 20194499449 is a prime.

It is a super-2 number, since 2×20194499481² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20194499411) 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, 270255 + ... + 336788.

It is an arithmetic number, because the mean of its divisors is an integer number (1814454516).

Almost surely, 2^20194499481 is an apocalyptic number.

It is an amenable number.

20194499481 is a deficient number, since it is larger than the sum of its proper divisors (8836772775).

20194499481 is a wasteful number, since it uses less digits than its factorization.

20194499481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607912.

The product of its (nonzero) digits is 746496, while the sum is 51.

It can be divided in two parts, 2019 and 4499481, that added together give a triangular number (4501500 = T₃₀₀₀).

The spelling of 20194499481 in words is "twenty billion, one hundred ninety-four million, four hundred ninety-nine thousand, four hundred eighty-one".