19622949734 has 4 divisors (see below), whose sum is σ = 29434424604. Its totient is φ = 9811474866.

The previous prime is 19622949719. The next prime is 19622949823. The reversal of 19622949734 is 43794922691.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19622949734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4905737432 + ... + 4905737435.

It is an arithmetic number, because the mean of its divisors is an integer number (7358606151).

Almost surely, 2^19622949734 is an apocalyptic number.

19622949734 is a deficient number, since it is larger than the sum of its proper divisors (9811474870).

19622949734 is an equidigital number, since it uses as much as digits as its factorization.

19622949734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9811474869.

The product of its digits is 5878656, while the sum is 56.

The spelling of 19622949734 in words is "nineteen billion, six hundred twenty-two million, nine hundred forty-nine thousand, seven hundred thirty-four".