649244497358 has 16 divisors (see below), whose sum is σ = 980924878080. Its totient is φ = 322269785400.

The previous prime is 649244497351. The next prime is 649244497387. The reversal of 649244497358 is 853794442946.

It is a junction number, because it is equal to n+sod(n) for n = 649244497294 and 649244497303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649244497351) 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, 6424763 + ... + 6525033.

It is an arithmetic number, because the mean of its divisors is an integer number (61307804880).

Almost surely, 2^649244497358 is an apocalyptic number.

649244497358 is a deficient number, since it is larger than the sum of its proper divisors (331680380722).

649244497358 is a wasteful number, since it uses less digits than its factorization.

649244497358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123703.

The product of its digits is 209018880, while the sum is 65.

The spelling of 649244497358 in words is "six hundred forty-nine billion, two hundred forty-four million, four hundred ninety-seven thousand, three hundred fifty-eight".