1663660342 has 8 divisors (see below), whose sum is σ = 2581542000. Its totient is φ = 803146344.

The previous prime is 1663660337. The next prime is 1663660343. The reversal of 1663660342 is 2430663661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663660343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14341842 + ... + 14341957.

It is an arithmetic number, because the mean of its divisors is an integer number (322692750).

Almost surely, 2^1663660342 is an apocalyptic number.

1663660342 is a deficient number, since it is larger than the sum of its proper divisors (917881658).

1663660342 is a wasteful number, since it uses less digits than its factorization.

1663660342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28683830.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 1663660342 is about 40787.9926203779. The cubic root of 1663660342 is about 1184.9177940327.

The spelling of 1663660342 in words is "one billion, six hundred sixty-three million, six hundred sixty thousand, three hundred forty-two".