618987074 has 4 divisors (see below), whose sum is σ = 928480614. Its totient is φ = 309493536.

The previous prime is 618987059. The next prime is 618987151. The reversal of 618987074 is 470789816.

618987074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 347561449 + 271425625 = 18643^2 + 16475^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154746767 + ... + 154746770.

Almost surely, 2^618987074 is an apocalyptic number.

618987074 is a deficient number, since it is larger than the sum of its proper divisors (309493540).

618987074 is a wasteful number, since it uses less digits than its factorization.

618987074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309493539.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 618987074 is about 24879.4508379908. The cubic root of 618987074 is about 852.2372775106.

The spelling of 618987074 in words is "six hundred eighteen million, nine hundred eighty-seven thousand, seventy-four".