649184136 has 16 divisors (see below), whose sum is σ = 1622960400. Its totient is φ = 216394704.

The previous prime is 649184093. The next prime is 649184189. The reversal of 649184136 is 631481946.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13524646 + ... + 13524693.

It is an arithmetic number, because the mean of its divisors is an integer number (101435025).

Almost surely, 2^649184136 is an apocalyptic number.

It is an amenable number.

649184136 is an abundant number, since it is smaller than the sum of its proper divisors (973776264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649184136 is a wasteful number, since it uses less digits than its factorization.

649184136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27049348 (or 27049344 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 649184136 is about 25479.0921345326. The cubic root of 649184136 is about 865.8765262644.

The spelling of 649184136 in words is "six hundred forty-nine million, one hundred eighty-four thousand, one hundred thirty-six".