1081668518 has 48 divisors (see below), whose sum is σ = 2040702720. Its totient is φ = 420024528.

The previous prime is 1081668509. The next prime is 1081668527. The reversal of 1081668518 is 8158661801.

It is an interprime number because it is at equal distance from previous prime (1081668509) and next prime (1081668527).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136871 + ... + 144557.

It is an arithmetic number, because the mean of its divisors is an integer number (42514640).

Almost surely, 2^1081668518 is an apocalyptic number.

1081668518 is a deficient number, since it is larger than the sum of its proper divisors (959034202).

1081668518 is a wasteful number, since it uses less digits than its factorization.

1081668518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761 (or 7738 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 1081668518 is about 32888.7293460845. The cubic root of 1081668518 is about 1026.5136527503.

The spelling of 1081668518 in words is "one billion, eighty-one million, six hundred sixty-eight thousand, five hundred eighteen".