649361386 has 16 divisors (see below), whose sum is σ = 987054336. Its totient is φ = 320367616.

The previous prime is 649361357. The next prime is 649361389. The reversal of 649361386 is 683163946.

It is not an unprimeable number, because it can be changed into a prime (649361389) 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, 49095 + ... + 60901.

It is an arithmetic number, because the mean of its divisors is an integer number (61690896).

Almost surely, 2^649361386 is an apocalyptic number.

649361386 is a deficient number, since it is larger than the sum of its proper divisors (337692950).

649361386 is a wasteful number, since it uses less digits than its factorization.

649361386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12173.

The product of its digits is 559872, while the sum is 46.

The square root of 649361386 is about 25482.5702392832. The cubic root of 649361386 is about 865.9553239633.

The spelling of 649361386 in words is "six hundred forty-nine million, three hundred sixty-one thousand, three hundred eighty-six".