1918567012 has 6 divisors (see below), whose sum is σ = 3357492278. Its totient is φ = 959283504.

The previous prime is 1918566983. The next prime is 1918567033. The reversal of 1918567012 is 2107658191.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1805910016 + 112656996 = 42496^2 + 10614^2 .

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 as a sum of consecutive naturals, namely, 239820873 + ... + 239820880.

Almost surely, 2^1918567012 is an apocalyptic number.

It is an amenable number.

1918567012 is a deficient number, since it is larger than the sum of its proper divisors (1438925266).

1918567012 is a wasteful number, since it uses less digits than its factorization.

1918567012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479641757 (or 479641755 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1918567012 is about 43801.4498846785. The cubic root of 1918567012 is about 1242.5837152225.

The spelling of 1918567012 in words is "one billion, nine hundred eighteen million, five hundred sixty-seven thousand, twelve".