1663890414 has 8 divisors (see below), whose sum is σ = 3327780840. Its totient is φ = 554630136.

The previous prime is 1663890409. The next prime is 1663890421. The reversal of 1663890414 is 4140983661.

It is a sphenic number, since it is the product of 3 distinct primes.

1663890414 is an admirable number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 138657529 + ... + 138657540.

It is an arithmetic number, because the mean of its divisors is an integer number (415972605).

Almost surely, 2^1663890414 is an apocalyptic number.

1663890414 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1663890414 is a wasteful number, since it uses less digits than its factorization.

1663890414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277315074.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1663890414 is about 40790.8128627023. The cubic root of 1663890414 is about 1184.9724133228.

The spelling of 1663890414 in words is "one billion, six hundred sixty-three million, eight hundred ninety thousand, four hundred fourteen".