649238326 has 12 divisors (see below), whose sum is σ = 1070438796. Its totient is φ = 295108220.

The previous prime is 649238323. The next prime is 649238327. The reversal of 649238326 is 623832946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649238323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1341160 + ... + 1341643.

It is an arithmetic number, because the mean of its divisors is an integer number (89203233).

Almost surely, 2^649238326 is an apocalyptic number.

649238326 is a deficient number, since it is larger than the sum of its proper divisors (421200470).

649238326 is a wasteful number, since it uses less digits than its factorization.

649238326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682827 (or 2682816 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 649238326 is about 25480.1555332773. The cubic root of 649238326 is about 865.9006183213.

The spelling of 649238326 in words is "six hundred forty-nine million, two hundred thirty-eight thousand, three hundred twenty-six".