1018440478 has 16 divisors (see below), whose sum is σ = 1667245680. Its totient is φ = 462731200.

The previous prime is 1018440457. The next prime is 1018440491. The reversal of 1018440478 is 8740448101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51858 + ... + 68746.

It is an arithmetic number, because the mean of its divisors is an integer number (104202855).

Almost surely, 2^1018440478 is an apocalyptic number.

1018440478 is a deficient number, since it is larger than the sum of its proper divisors (648805202).

1018440478 is a wasteful number, since it uses less digits than its factorization.

1018440478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19643.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1018440478 is about 31913.0142418418. The cubic root of 1018440478 is about 1006.1094249156.

Adding to 1018440478 its reverse (8740448101), we get a palindrome (9758888579).

The spelling of 1018440478 in words is "one billion, eighteen million, four hundred forty thousand, four hundred seventy-eight".