618263378 has 16 divisors (see below), whose sum is σ = 982541664. Its totient is φ = 290771520.

The previous prime is 618263357. The next prime is 618263407. The reversal of 618263378 is 873362816.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64433 + ... + 73403.

It is an arithmetic number, because the mean of its divisors is an integer number (61408854).

Almost surely, 2^618263378 is an apocalyptic number.

618263378 is a deficient number, since it is larger than the sum of its proper divisors (364278286).

618263378 is a wasteful number, since it uses less digits than its factorization.

618263378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11017.

The product of its digits is 290304, while the sum is 44.

The square root of 618263378 is about 24864.9025334909. The cubic root of 618263378 is about 851.9050135829.

The spelling of 618263378 in words is "six hundred eighteen million, two hundred sixty-three thousand, three hundred seventy-eight".