1663522453 has 8 divisors (see below), whose sum is σ = 1670515200. Its totient is φ = 1656545328.

The previous prime is 1663522451. The next prime is 1663522457. The reversal of 1663522453 is 3542253661.

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

It is a cyclic number.

It is not a de Polignac number, because 1663522453 - 2¹ = 1663522451 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 (1663522451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240400 + ... + 247222.

It is an arithmetic number, because the mean of its divisors is an integer number (208814400).

Almost surely, 2^1663522453 is an apocalyptic number.

It is an amenable number.

1663522453 is a deficient number, since it is larger than the sum of its proper divisors (6992747).

1663522453 is an equidigital number, since it uses as much as digits as its factorization.

1663522453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7811.

The product of its digits is 129600, while the sum is 37.

The square root of 1663522453 is about 40786.3022717186. The cubic root of 1663522453 is about 1184.8850566524.

The spelling of 1663522453 in words is "one billion, six hundred sixty-three million, five hundred twenty-two thousand, four hundred fifty-three".