1478623878 has 12 divisors (see below), whose sum is σ = 3203685108. Its totient is φ = 492874620.

The previous prime is 1478623849. The next prime is 1478623879. The reversal of 1478623878 is 8783268741.

It is a happy number.

1478623878 is a `hidden beast` number, since 1 + 4 + 7 + 8 + 623 + 8 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478623879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41072868 + ... + 41072903.

It is an arithmetic number, because the mean of its divisors is an integer number (266973759).

Almost surely, 2^1478623878 is an apocalyptic number.

1478623878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1478623878 is an abundant number, since it is smaller than the sum of its proper divisors (1725061230).

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

1478623878 is a wasteful number, since it uses less digits than its factorization.

1478623878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82145779 (or 82145776 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 1478623878 is about 38452.8786698733. The cubic root of 1478623878 is about 1139.2505276950.

The spelling of 1478623878 in words is "one billion, four hundred seventy-eight million, six hundred twenty-three thousand, eight hundred seventy-eight".