20193359481 has 8 divisors (see below), whose sum is σ = 29916088160. Its totient is φ = 13462239636.

The previous prime is 20193359479. The next prime is 20193359491. The reversal of 20193359481 is 18495339102.

It is a happy number.

20193359481 is a `hidden beast` number, since 20 + 1 + 9 + 33 + 594 + 8 + 1 = 666.

It is not a de Polignac number, because 20193359481 - 2¹ = 20193359479 is a prime.

It is a super-2 number, since 2×20193359481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20193359491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373951075 + ... + 373951128.

It is an arithmetic number, because the mean of its divisors is an integer number (3739511020).

Almost surely, 2^20193359481 is an apocalyptic number.

It is an amenable number.

20193359481 is a deficient number, since it is larger than the sum of its proper divisors (9722728679).

20193359481 is an equidigital number, since it uses as much as digits as its factorization.

20193359481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747902212 (or 747902206 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 20193359481 in words is "twenty billion, one hundred ninety-three million, three hundred fifty-nine thousand, four hundred eighty-one".