1478338394 has 96 divisors (see below), whose sum is σ = 2710287216. Its totient is φ = 598671360.

The previous prime is 1478338387. The next prime is 1478338399. The reversal of 1478338394 is 4938338741.

It can be written as a sum of positive squares in 24 ways, for example, as 155925169 + 1322413225 = 12487^2 + 36365^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478338399) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15240554 + ... + 15240650.

Almost surely, 2^1478338394 is an apocalyptic number.

1478338394 is a deficient number, since it is larger than the sum of its proper divisors (1231948822).

1478338394 is a wasteful number, since it uses less digits than its factorization.

1478338394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 199 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 1478338394 is about 38449.1663628745. The cubic root of 1478338394 is about 1139.1772030457.

The spelling of 1478338394 in words is "one billion, four hundred seventy-eight million, three hundred thirty-eight thousand, three hundred ninety-four".