649118033 has 4 divisors (see below), whose sum is σ = 683282160. Its totient is φ = 614953908.

The previous prime is 649118023. The next prime is 649118039. The reversal of 649118033 is 330811946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 649118033 - 2¹² = 649113937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649117984 and 649118002.

It is not an unprimeable number, because it can be changed into a prime (649118039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17082035 + ... + 17082072.

It is an arithmetic number, because the mean of its divisors is an integer number (170820540).

Almost surely, 2^649118033 is an apocalyptic number.

It is an amenable number.

649118033 is a deficient number, since it is larger than the sum of its proper divisors (34164127).

649118033 is a wasteful number, since it uses less digits than its factorization.

649118033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34164126.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 649118033 is about 25477.7949006581. The cubic root of 649118033 is about 865.8471360520.

Adding to 649118033 its reverse (330811946), we get a palindrome (979929979).

The spelling of 649118033 in words is "six hundred forty-nine million, one hundred eighteen thousand, thirty-three".