19412290801 has 4 divisors (see below), whose sum is σ = 19412575204. Its totient is φ = 19412006400.

The previous prime is 19412290771. The next prime is 19412290813. The reversal of 19412290801 is 10809221491.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10809221491 = 2267 ⋅4768073.

It can be written as a sum of positive squares in 2 ways, for example, as 3656016225 + 15756274576 = 60465^2 + 125524^2 .

It is a 3-Lehmer number, since φ(19412290801) divides (19412290801-1)³.

It is a cyclic number.

It is not a de Polignac number, because 19412290801 - 2²⁵ = 19378736369 is a prime.

It is a deceptive number, since it divides R_19412290800.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19412290901) 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, 28441 + ... + 199081.

It is an arithmetic number, because the mean of its divisors is an integer number (4853143801).

It is a Poulet number, since it divides 2^19412290800-1.

Almost surely, 2^19412290801 is an apocalyptic number.

19412290801 is the 113761-st pentagonal number.

It is an amenable number.

19412290801 is a deficient number, since it is larger than the sum of its proper divisors (284403).

19412290801 is a wasteful number, since it uses less digits than its factorization.

19412290801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284402.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 19412290801 in words is "nineteen billion, four hundred twelve million, two hundred ninety thousand, eight hundred one".