19122949696 has 14 divisors (see below), whose sum is σ = 37947103430. Its totient is φ = 9561474816.

The previous prime is 19122949691. The next prime is 19122949709. The reversal of 19122949696 is 69694922191.

It can be written as a sum of positive squares in only one way, i.e., 12306796096 + 6816153600 = 110936^2 + 82560^2 .

It is a super-4 number, since 4×19122949696⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19122949696.

It is not an unprimeable number, because it can be changed into a prime (19122949691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149397981 + ... + 149398108.

Almost surely, 2^19122949696 is an apocalyptic number.

19122949696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19122949696 is a deficient number, since it is larger than the sum of its proper divisors (18824153734).

19122949696 is an equidigital number, since it uses as much as digits as its factorization.

19122949696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298796101 (or 298796091 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 58.

The spelling of 19122949696 in words is "nineteen billion, one hundred twenty-two million, nine hundred forty-nine thousand, six hundred ninety-six".