1423641768 has 32 divisors (see below), whose sum is σ = 3673916160. Its totient is φ = 459239040.

The previous prime is 1423641749. The next prime is 1423641809. The reversal of 1423641768 is 8671463241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956005 + ... + 957492.

It is an arithmetic number, because the mean of its divisors is an integer number (114809880).

Almost surely, 2^1423641768 is an apocalyptic number.

It is an amenable number.

1423641768 is an abundant number, since it is smaller than the sum of its proper divisors (2250274392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423641768 is a wasteful number, since it uses less digits than its factorization.

1423641768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913537 (or 1913533 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 1423641768 is about 37731.1776651617. The cubic root of 1423641768 is about 1124.9509161795.

The spelling of 1423641768 in words is "one billion, four hundred twenty-three million, six hundred forty-one thousand, seven hundred sixty-eight".