1451023663 has 4 divisors (see below), whose sum is σ = 1471460688. Its totient is φ = 1430586640.

The previous prime is 1451023657. The next prime is 1451023667. The reversal of 1451023663 is 3663201541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3663201541 = 5639 ⋅649619.

It is a cyclic number.

It is not a de Polignac number, because 1451023663 - 2²⁹ = 914152751 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 (1451023667) 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, 10218406 + ... + 10218547.

It is an arithmetic number, because the mean of its divisors is an integer number (367865172).

Almost surely, 2^1451023663 is an apocalyptic number.

1451023663 is a deficient number, since it is larger than the sum of its proper divisors (20437025).

1451023663 is an equidigital number, since it uses as much as digits as its factorization.

1451023663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20437024.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1451023663 is about 38092.3045115414. The cubic root of 1451023663 is about 1132.1174859957.

The spelling of 1451023663 in words is "one billion, four hundred fifty-one million, twenty-three thousand, six hundred sixty-three".