20140344619 has 2 divisors, whose sum is σ = 20140344620. Its totient is φ = 20140344618.

The previous prime is 20140344617. The next prime is 20140344649. The reversal of 20140344619 is 91644304102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20140344619 - 2¹ = 20140344617 is a prime.

It is a super-2 number, since 2×20140344619² (a number of 21 digits) contains 22 as substring.

Together with 20140344617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20140344617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070172309 + 10070172310.

It is an arithmetic number, because the mean of its divisors is an integer number (10070172310).

Almost surely, 2^20140344619 is an apocalyptic number.

20140344619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20140344619 is an equidigital number, since it uses as much as digits as its factorization.

20140344619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20140344619 in words is "twenty billion, one hundred forty million, three hundred forty-four thousand, six hundred nineteen".