1485638123 has 4 divisors (see below), whose sum is σ = 1486050240. Its totient is φ = 1485226008.

The previous prime is 1485638093. The next prime is 1485638131. The reversal of 1485638123 is 3218365841.

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

It is a cyclic number.

It is not a de Polignac number, because 1485638123 - 2⁶ = 1485638059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1485638153) 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, 200603 + ... + 207876.

It is an arithmetic number, because the mean of its divisors is an integer number (371512560).

Almost surely, 2^1485638123 is an apocalyptic number.

1485638123 is a deficient number, since it is larger than the sum of its proper divisors (412117).

1485638123 is an equidigital number, since it uses as much as digits as its factorization.

1485638123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412116.

The product of its digits is 138240, while the sum is 41.

The square root of 1485638123 is about 38543.9764814167. The cubic root of 1485638123 is about 1141.0491324314.

The spelling of 1485638123 in words is "one billion, four hundred eighty-five million, six hundred thirty-eight thousand, one hundred twenty-three".