1918525418 has 16 divisors (see below), whose sum is σ = 3030138720. Its totient is φ = 908508816.

The previous prime is 1918525403. The next prime is 1918525451. The reversal of 1918525418 is 8145258191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197921 + ... + 207387.

It is an arithmetic number, because the mean of its divisors is an integer number (189383670).

Almost surely, 2^1918525418 is an apocalyptic number.

1918525418 is a deficient number, since it is larger than the sum of its proper divisors (1111613302).

1918525418 is a wasteful number, since it uses less digits than its factorization.

1918525418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14821.

The product of its digits is 115200, while the sum is 44.

The square root of 1918525418 is about 43800.9750804705. The cubic root of 1918525418 is about 1242.5747355343.

The spelling of 1918525418 in words is "one billion, nine hundred eighteen million, five hundred twenty-five thousand, four hundred eighteen".