1478855823 has 16 divisors (see below), whose sum is σ = 2197681920. Its totient is φ = 879071616.

The previous prime is 1478855813. The next prime is 1478855831. The reversal of 1478855823 is 3285588741.

It is a de Polignac number, because none of the positive numbers 2^k-1478855823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478855803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762115 + ... + 764052.

It is an arithmetic number, because the mean of its divisors is an integer number (137355120).

Almost surely, 2^1478855823 is an apocalyptic number.

1478855823 is a deficient number, since it is larger than the sum of its proper divisors (718826097).

1478855823 is a wasteful number, since it uses less digits than its factorization.

1478855823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526206.

The product of its digits is 2150400, while the sum is 51.

The square root of 1478855823 is about 38455.8945156656. The cubic root of 1478855823 is about 1139.3100942627.

The spelling of 1478855823 in words is "one billion, four hundred seventy-eight million, eight hundred fifty-five thousand, eight hundred twenty-three".