1423838815 has 24 divisors (see below), whose sum is σ = 2092178160. Its totient is φ = 924956928.

The previous prime is 1423838813. The next prime is 1423838849. The reversal of 1423838815 is 5188383241.

It is not a de Polignac number, because 1423838815 - 2¹ = 1423838813 is a prime.

It is a super-2 number, since 2×1423838815² = 4054633942201208450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423838813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148282 + ... + 157591.

It is an arithmetic number, because the mean of its divisors is an integer number (87174090).

Almost surely, 2^1423838815 is an apocalyptic number.

1423838815 is a deficient number, since it is larger than the sum of its proper divisors (668339345).

1423838815 is a wasteful number, since it uses less digits than its factorization.

1423838815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305911 (or 305904 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 1423838815 is about 37733.7887708086. The cubic root of 1423838815 is about 1125.0028154662.

The spelling of 1423838815 in words is "one billion, four hundred twenty-three million, eight hundred thirty-eight thousand, eight hundred fifteen".