20133381738 has 8 divisors (see below), whose sum is σ = 40266763488. Its totient is φ = 6711127244.

The previous prime is 20133381733. The next prime is 20133381743. The reversal of 20133381738 is 83718333102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20133381733) and next prime (20133381743).

It is a sphenic number, since it is the product of 3 distinct primes.

20133381738 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20133381696 and 20133381705.

It is not an unprimeable number, because it can be changed into a prime (20133381733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677781806 + ... + 1677781817.

It is an arithmetic number, because the mean of its divisors is an integer number (5033345436).

Almost surely, 2^20133381738 is an apocalyptic number.

20133381738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20133381738 is a wasteful number, since it uses less digits than its factorization.

20133381738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355563628.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 20133381738 in words is "twenty billion, one hundred thirty-three million, three hundred eighty-one thousand, seven hundred thirty-eight".