1108981538 has 32 divisors (see below), whose sum is σ = 2015505408. Its totient is φ = 447508800.

The previous prime is 1108981537. The next prime is 1108981541. The reversal of 1108981538 is 8351898011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1108981537) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18473 + ... + 50588.

It is an arithmetic number, because the mean of its divisors is an integer number (62984544).

Almost surely, 2^1108981538 is an apocalyptic number.

1108981538 is a deficient number, since it is larger than the sum of its proper divisors (906523870).

1108981538 is a wasteful number, since it uses less digits than its factorization.

1108981538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69138.

The product of its (nonzero) digits is 69120, while the sum is 44.

The square root of 1108981538 is about 33301.3744160808. The cubic root of 1108981538 is about 1035.0820375745.

The spelling of 1108981538 in words is "one billion, one hundred eight million, nine hundred eighty-one thousand, five hundred thirty-eight".