618867041 has 4 divisors (see below), whose sum is σ = 666472212. Its totient is φ = 571261872.

The previous prime is 618867019. The next prime is 618867071. The reversal of 618867041 is 140768816.

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

It can be written as a sum of positive squares in 2 ways, for example, as 150577441 + 468289600 = 12271^2 + 21640^2 .

It is a cyclic number.

It is not a de Polignac number, because 618867041 - 2²⁶ = 551758177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 618867041.

It is not an unprimeable number, because it can be changed into a prime (618867071) by changing a digit.

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, 23802566 + ... + 23802591.

It is an arithmetic number, because the mean of its divisors is an integer number (166618053).

Almost surely, 2^618867041 is an apocalyptic number.

It is an amenable number.

618867041 is a deficient number, since it is larger than the sum of its proper divisors (47605171).

618867041 is a wasteful number, since it uses less digits than its factorization.

618867041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47605170.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 618867041 is about 24877.0384290413. The cubic root of 618867041 is about 852.1821857785.

The spelling of 618867041 in words is "six hundred eighteen million, eight hundred sixty-seven thousand, forty-one".