19428104701 has 4 divisors (see below), whose sum is σ = 19450258492. Its totient is φ = 19405950912.

The previous prime is 19428104693. The next prime is 19428104741. The reversal of 19428104701 is 10740182491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10740182491 = 2113 ⋅5082907.

It can be written as a sum of positive squares in 2 ways, for example, as 8392392100 + 11035712601 = 91610^2 + 105051^2 .

It is a cyclic number.

It is not a de Polignac number, because 19428104701 - 2³ = 19428104693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428104741) 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, 11075580 + ... + 11077333.

It is an arithmetic number, because the mean of its divisors is an integer number (4862564623).

Almost surely, 2^19428104701 is an apocalyptic number.

It is an amenable number.

19428104701 is a deficient number, since it is larger than the sum of its proper divisors (22153791).

19428104701 is an equidigital number, since it uses as much as digits as its factorization.

19428104701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22153790.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 19428104701 in words is "nineteen billion, four hundred twenty-eight million, one hundred four thousand, seven hundred one".