1478671538 has 4 divisors (see below), whose sum is σ = 2218007310. Its totient is φ = 739335768.

The previous prime is 1478671529. The next prime is 1478671583. The reversal of 1478671538 is 8351768741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1039224169 + 439447369 = 32237^2 + 20963^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369667883 + ... + 369667886.

Almost surely, 2^1478671538 is an apocalyptic number.

1478671538 is a deficient number, since it is larger than the sum of its proper divisors (739335772).

1478671538 is an equidigital number, since it uses as much as digits as its factorization.

1478671538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739335771.

The product of its digits is 1128960, while the sum is 50.

The square root of 1478671538 is about 38453.4983844123. The cubic root of 1478671538 is about 1139.2627679267.

The spelling of 1478671538 in words is "one billion, four hundred seventy-eight million, six hundred seventy-one thousand, five hundred thirty-eight".