19730401001 has 8 divisors (see below), whose sum is σ = 20206842120. Its totient is φ = 19257818112.

The previous prime is 19730400967. The next prime is 19730401007. The reversal of 19730401001 is 10010403791.

It can be written as a sum of positive squares in 4 ways, for example, as 81090025 + 19649310976 = 9005^2 + 140176^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19730401001 - 2¹⁴ = 19730384617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19730401007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954206 + ... + 974663.

It is an arithmetic number, because the mean of its divisors is an integer number (2525855265).

Almost surely, 2^19730401001 is an apocalyptic number.

It is an amenable number.

19730401001 is a deficient number, since it is larger than the sum of its proper divisors (476441119).

19730401001 is a wasteful number, since it uses less digits than its factorization.

19730401001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929115.

The product of its (nonzero) digits is 756, while the sum is 26.

Adding to 19730401001 its reverse (10010403791), we get a palindrome (29740804792).

The spelling of 19730401001 in words is "nineteen billion, seven hundred thirty million, four hundred one thousand, one".