1663493470 has 16 divisors (see below), whose sum is σ = 3030365520. Its totient is φ = 657380224.

The previous prime is 1663493467. The next prime is 1663493473. The reversal of 1663493470 is 743943661.

It is an interprime number because it is at equal distance from previous prime (1663493467) and next prime (1663493473).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663493473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001275 + ... + 1002934.

It is an arithmetic number, because the mean of its divisors is an integer number (189397845).

Almost surely, 2^1663493470 is an apocalyptic number.

1663493470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663493470 is a deficient number, since it is larger than the sum of its proper divisors (1366872050).

1663493470 is a wasteful number, since it uses less digits than its factorization.

1663493470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004299.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 1663493470 is about 40785.9469670621. The cubic root of 1663493470 is about 1184.8781753259.

The spelling of 1663493470 in words is "one billion, six hundred sixty-three million, four hundred ninety-three thousand, four hundred seventy".