1493303663 has 4 divisors (see below), whose sum is σ = 1507259880. Its totient is φ = 1479347448.

The previous prime is 1493303657. The next prime is 1493303671. The reversal of 1493303663 is 3663033941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1493303663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493303653) 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, 6977948 + ... + 6978161.

It is an arithmetic number, because the mean of its divisors is an integer number (376814970).

Almost surely, 2^1493303663 is an apocalyptic number.

1493303663 is a deficient number, since it is larger than the sum of its proper divisors (13956217).

1493303663 is a wasteful number, since it uses less digits than its factorization.

1493303663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13956216.

The product of its (nonzero) digits is 104976, while the sum is 38.

The square root of 1493303663 is about 38643.2874248556. The cubic root of 1493303663 is about 1143.0082809113.

The spelling of 1493303663 in words is "one billion, four hundred ninety-three million, three hundred three thousand, six hundred sixty-three".