618685142 has 8 divisors (see below), whose sum is σ = 968376816. Its totient is φ = 295892872.

The previous prime is 618685129. The next prime is 618685189. The reversal of 618685142 is 241586816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 618685142.

It is a congruent number.

It is an unprimeable number.

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, 6724793 + ... + 6724884.

It is an arithmetic number, because the mean of its divisors is an integer number (121047102).

Almost surely, 2^618685142 is an apocalyptic number.

618685142 is a deficient number, since it is larger than the sum of its proper divisors (349691674).

618685142 is a wasteful number, since it uses less digits than its factorization.

618685142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13449702.

The product of its digits is 92160, while the sum is 41.

The square root of 618685142 is about 24873.3821986476. The cubic root of 618685142 is about 852.0986857337.

The spelling of 618685142 in words is "six hundred eighteen million, six hundred eighty-five thousand, one hundred forty-two".