648974011391 has 8 divisors (see below), whose sum is σ = 650643907200. Its totient is φ = 647304692760.

The previous prime is 648974011381. The next prime is 648974011409. The reversal of 648974011391 is 193110479846.

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 648974011391 - 2¹⁸ = 648973749247 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 (648974011321) 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, 2154356 + ... + 2437046.

It is an arithmetic number, because the mean of its divisors is an integer number (81330488400).

Almost surely, 2^648974011391 is an apocalyptic number.

648974011391 is a deficient number, since it is larger than the sum of its proper divisors (1669895809).

648974011391 is a wasteful number, since it uses less digits than its factorization.

648974011391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288589.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 648974011391 in words is "six hundred forty-eight billion, nine hundred seventy-four million, eleven thousand, three hundred ninety-one".