19648401007 has 8 divisors (see below), whose sum is σ = 19791748656. Its totient is φ = 19505284032.

The previous prime is 19648400963. The next prime is 19648401109. The reversal of 19648401007 is 70010484691.

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 19648401007 - 2¹⁹ = 19647876719 is a prime.

It is a super-2 number, since 2×19648401007² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19648401607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115188 + ... + 229270.

It is an arithmetic number, because the mean of its divisors is an integer number (2473968582).

Almost surely, 2^19648401007 is an apocalyptic number.

19648401007 is a deficient number, since it is larger than the sum of its proper divisors (143347649).

19648401007 is a wasteful number, since it uses less digits than its factorization.

19648401007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115337.

The product of its (nonzero) digits is 48384, while the sum is 40.

Adding to 19648401007 its reverse (70010484691), we get a palindrome (89658885698).

The spelling of 19648401007 in words is "nineteen billion, six hundred forty-eight million, four hundred one thousand, seven".