19164722074 has 8 divisors (see below), whose sum is σ = 28752441588. Its totient is φ = 9580574880.

The previous prime is 19164722063. The next prime is 19164722099. The reversal of 19164722074 is 47022746191.

It can be written as a sum of positive squares in 2 ways, for example, as 18156215025 + 1008507049 = 134745^2 + 31757^2 .

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

It is a super-2 number, since 2×19164722074² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19164722074.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879627 + ... + 901150.

Almost surely, 2^19164722074 is an apocalyptic number.

19164722074 is a deficient number, since it is larger than the sum of its proper divisors (9587719514).

19164722074 is a wasteful number, since it uses less digits than its factorization.

19164722074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786160.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 19164722074 in words is "nineteen billion, one hundred sixty-four million, seven hundred twenty-two thousand, seventy-four".