1378040018 has 16 divisors (see below), whose sum is σ = 2185368000. Its totient is φ = 649901232.

The previous prime is 1378040003. The next prime is 1378040039. The reversal of 1378040018 is 8100408731.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70478 + ... + 87881.

It is an arithmetic number, because the mean of its divisors is an integer number (136585500).

Almost surely, 2^1378040018 is an apocalyptic number.

1378040018 is a deficient number, since it is larger than the sum of its proper divisors (807327982).

1378040018 is a wasteful number, since it uses less digits than its factorization.

1378040018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158609.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1378040018 is about 37121.9613975339. The cubic root of 1378040018 is about 1112.8089498884.

Adding to 1378040018 its reverse (8100408731), we get a palindrome (9478448749).

The spelling of 1378040018 in words is "one billion, three hundred seventy-eight million, forty thousand, eighteen".