618986144 has 24 divisors (see below), whose sum is σ = 1392719328. Its totient is φ = 265279680.

The previous prime is 618986131. The next prime is 618986149. The reversal of 618986144 is 441689816.

It is not an unprimeable number, because it can be changed into a prime (618986149) 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, 1381442 + ... + 1381889.

It is an arithmetic number, because the mean of its divisors is an integer number (58029972).

Almost surely, 2^618986144 is an apocalyptic number.

It is an amenable number.

618986144 is an abundant number, since it is smaller than the sum of its proper divisors (773733184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618986144 is a wasteful number, since it uses less digits than its factorization.

618986144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763348 (or 2763340 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 618986144 is about 24879.4321478606. The cubic root of 618986144 is about 852.2368506945.

The spelling of 618986144 in words is "six hundred eighteen million, nine hundred eighty-six thousand, one hundred forty-four".