618240379 has 4 divisors (see below), whose sum is σ = 618348160. Its totient is φ = 618132600.

The previous prime is 618240367. The next prime is 618240421. The reversal of 618240379 is 973042816.

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

It is a cyclic number.

It is not a de Polignac number, because 618240379 - 2¹¹ = 618238331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618240319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44772 + ... + 56929.

It is an arithmetic number, because the mean of its divisors is an integer number (154587040).

Almost surely, 2^618240379 is an apocalyptic number.

618240379 is a deficient number, since it is larger than the sum of its proper divisors (107781).

618240379 is a wasteful number, since it uses less digits than its factorization.

618240379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107780.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 618240379 is about 24864.4400499991. The cubic root of 618240379 is about 851.8944500123.

The spelling of 618240379 in words is "six hundred eighteen million, two hundred forty thousand, three hundred seventy-nine".