1663658274 has 16 divisors (see below), whose sum is σ = 3332467008. Its totient is φ = 553694352.

The previous prime is 1663658251. The next prime is 1663658281. The reversal of 1663658274 is 4728563661.

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 7 ways as a sum of consecutive naturals, for example, 210397 + ... + 218160.

It is an arithmetic number, because the mean of its divisors is an integer number (208279188).

Almost surely, 2^1663658274 is an apocalyptic number.

1663658274 is an abundant number, since it is smaller than the sum of its proper divisors (1668808734).

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

1663658274 is a wasteful number, since it uses less digits than its factorization.

1663658274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429209.

The product of its digits is 1451520, while the sum is 48.

The square root of 1663658274 is about 40787.9672697721. The cubic root of 1663658274 is about 1184.9173030648.

The spelling of 1663658274 in words is "one billion, six hundred sixty-three million, six hundred fifty-eight thousand, two hundred seventy-four".