618909442 has 16 divisors (see below), whose sum is σ = 949178880. Its totient is φ = 302531328.

The previous prime is 618909437. The next prime is 618909443. The reversal of 618909442 is 244909816.

It is not an unprimeable number, because it can be changed into a prime (618909443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94498 + ... + 100834.

It is an arithmetic number, because the mean of its divisors is an integer number (59323680).

Almost surely, 2^618909442 is an apocalyptic number.

618909442 is a deficient number, since it is larger than the sum of its proper divisors (330269438).

618909442 is a wasteful number, since it uses less digits than its factorization.

618909442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7425.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 618909442 is about 24877.8906260157. The cubic root of 618909442 is about 852.2016474449.

The spelling of 618909442 in words is "six hundred eighteen million, nine hundred nine thousand, four hundred forty-two".