1081249208 has 16 divisors (see below), whose sum is σ = 2183291880. Its totient is φ = 499038048.

The previous prime is 1081249189. The next prime is 1081249219. The reversal of 1081249208 is 8029421801.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 5198210 + ... + 5198417.

Almost surely, 2^1081249208 is an apocalyptic number.

It is an amenable number.

1081249208 is an abundant number, since it is smaller than the sum of its proper divisors (1102042672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1081249208 is a wasteful number, since it uses less digits than its factorization.

1081249208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396646 (or 10396642 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 1081249208 is about 32882.3540519836. The cubic root of 1081249208 is about 1026.3809925550.

The spelling of 1081249208 in words is "one billion, eighty-one million, two hundred forty-nine thousand, two hundred eight".