1663323494 has 8 divisors (see below), whose sum is σ = 2851411728. Its totient is φ = 712852920.

The previous prime is 1663323491. The next prime is 1663323509. The reversal of 1663323494 is 4943233661.

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 (1663323491) 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, 59404397 + ... + 59404424.

It is an arithmetic number, because the mean of its divisors is an integer number (356426466).

Almost surely, 2^1663323494 is an apocalyptic number.

1663323494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1663323494 is a deficient number, since it is larger than the sum of its proper divisors (1188088234).

1663323494 is a wasteful number, since it uses less digits than its factorization.

1663323494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118808830.

The product of its digits is 279936, while the sum is 41.

The square root of 1663323494 is about 40783.8631568909. The cubic root of 1663323494 is about 1184.8378169443.

The spelling of 1663323494 in words is "one billion, six hundred sixty-three million, three hundred twenty-three thousand, four hundred ninety-four".