1049681816 has 16 divisors (see below), whose sum is σ = 1968741240. Its totient is φ = 524684160.

The previous prime is 1049681791. The next prime is 1049681833. The reversal of 1049681816 is 6181869401.

It is a super-2 number, since 2×1049681816² = 2203663829682115712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11831 + ... + 47321.

Almost surely, 2^1049681816 is an apocalyptic number.

It is an amenable number.

1049681816 is a deficient number, since it is larger than the sum of its proper divisors (919059424).

1049681816 is a wasteful number, since it uses less digits than its factorization.

1049681816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39194 (or 39190 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1049681816 is about 32398.7934343241. The cubic root of 1049681816 is about 1016.2936794400.

The spelling of 1049681816 in words is "one billion, forty-nine million, six hundred eighty-one thousand, eight hundred sixteen".