20019689386 has 8 divisors (see below), whose sum is σ = 30668460480. Its totient is φ = 9796869228.

The previous prime is 20019689381. The next prime is 20019689399. The reversal of 20019689386 is 68398691002.

It is a happy number.

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

It is a super-3 number, since 3×20019689386³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20019689381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106487616 + ... + 106487803.

It is an arithmetic number, because the mean of its divisors is an integer number (3833557560).

Almost surely, 2^20019689386 is an apocalyptic number.

20019689386 is a deficient number, since it is larger than the sum of its proper divisors (10648771094).

20019689386 is a wasteful number, since it uses less digits than its factorization.

20019689386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212975468.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 20019689386 in words is "twenty billion, nineteen million, six hundred eighty-nine thousand, three hundred eighty-six".