1663444153 has 8 divisors (see below), whose sum is σ = 1901686400. Its totient is φ = 1425353760.

The previous prime is 1663444127. The next prime is 1663444183. The reversal of 1663444153 is 3514443661.

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 1663444153 - 2⁹ = 1663443641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663444183) 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, 13428 + ... + 59221.

It is an arithmetic number, because the mean of its divisors is an integer number (237710800).

Almost surely, 2^1663444153 is an apocalyptic number.

It is an amenable number.

1663444153 is a deficient number, since it is larger than the sum of its proper divisors (238242247).

1663444153 is an equidigital number, since it uses as much as digits as its factorization.

1663444153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75927.

The product of its digits is 103680, while the sum is 37.

The square root of 1663444153 is about 40785.3423793402. The cubic root of 1663444153 is about 1184.8664659894.

The spelling of 1663444153 in words is "one billion, six hundred sixty-three million, four hundred forty-four thousand, one hundred fifty-three".