649135294 has 4 divisors (see below), whose sum is σ = 973702944. Its totient is φ = 324567646.

The previous prime is 649135273. The next prime is 649135301. The reversal of 649135294 is 492531946.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 649135294.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162283822 + ... + 162283825.

It is an arithmetic number, because the mean of its divisors is an integer number (243425736).

Almost surely, 2^649135294 is an apocalyptic number.

649135294 is a deficient number, since it is larger than the sum of its proper divisors (324567650).

649135294 is a wasteful number, since it uses less digits than its factorization.

649135294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324567649.

The product of its digits is 233280, while the sum is 43.

The square root of 649135294 is about 25478.1336443626. The cubic root of 649135294 is about 865.8548106988.

It can be divided in two parts, 64913 and 5294, that added together give a palindrome (70207).

The spelling of 649135294 in words is "six hundred forty-nine million, one hundred thirty-five thousand, two hundred ninety-four".