1018668474 has 20 divisors (see below), whose sum is σ = 2282572314. Its totient is φ = 339556104.

The previous prime is 1018668467. The next prime is 1018668491. The reversal of 1018668474 is 4748668101.

It can be written as a sum of positive squares in only one way, i.e., 921547449 + 97121025 = 30357^2 + 9855^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3143877 + ... + 3144200.

Almost surely, 2^1018668474 is an apocalyptic number.

1018668474 is an abundant number, since it is smaller than the sum of its proper divisors (1263903840).

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

1018668474 is an equidigital number, since it uses as much as digits as its factorization.

1018668474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6288091 (or 6288082 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1018668474 is about 31916.5861896287. The cubic root of 1018668474 is about 1006.1844978053.

The spelling of 1018668474 in words is "one billion, eighteen million, six hundred sixty-eight thousand, four hundred seventy-four".