20838327498 has 12 divisors (see below), whose sum is σ = 45149709618. Its totient is φ = 6946109160.

The previous prime is 20838327491. The next prime is 20838327511. The reversal of 20838327498 is 89472383802.

20838327498 is a `hidden beast` number, since 208 + 3 + 83 + 274 + 98 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13132472409 + 7705855089 = 114597^2 + 87783^2 .

It is not an unprimeable number, because it can be changed into a prime (20838327491) 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 5 ways as a sum of consecutive naturals, for example, 578842413 + ... + 578842448.

Almost surely, 2^20838327498 is an apocalyptic number.

20838327498 is an abundant number, since it is smaller than the sum of its proper divisors (24311382120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20838327498 is a wasteful number, since it uses less digits than its factorization.

20838327498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157684869 (or 1157684866 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 20838327498 in words is "twenty billion, eight hundred thirty-eight million, three hundred twenty-seven thousand, four hundred ninety-eight".