1663712294 has 8 divisors (see below), whose sum is σ = 2542654800. Its totient is φ = 816160696.

The previous prime is 1663712287. The next prime is 1663712311. The reversal of 1663712294 is 4922173661.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7847594 + ... + 7847805.

It is an arithmetic number, because the mean of its divisors is an integer number (317831850).

Almost surely, 2^1663712294 is an apocalyptic number.

1663712294 is a deficient number, since it is larger than the sum of its proper divisors (878942506).

1663712294 is a wasteful number, since it uses less digits than its factorization.

1663712294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15695454.

The product of its digits is 108864, while the sum is 41.

The square root of 1663712294 is about 40788.6294694980. The cubic root of 1663712294 is about 1184.9301279222.

The spelling of 1663712294 in words is "one billion, six hundred sixty-three million, seven hundred twelve thousand, two hundred ninety-four".