1081667321 has 16 divisors (see below), whose sum is σ = 1319592960. Its totient is φ = 865967760.

The previous prime is 1081667297. The next prime is 1081667329. The reversal of 1081667321 is 1237661801.

It is not a de Polignac number, because 1081667321 - 2¹⁰ = 1081666297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081667329) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47831 + ... + 66716.

It is an arithmetic number, because the mean of its divisors is an integer number (82474560).

Almost surely, 2^1081667321 is an apocalyptic number.

It is an amenable number.

1081667321 is a deficient number, since it is larger than the sum of its proper divisors (237925639).

1081667321 is a wasteful number, since it uses less digits than its factorization.

1081667321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114644.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1081667321 is about 32888.7111483561. The cubic root of 1081667321 is about 1026.5132740953.

The spelling of 1081667321 in words is "one billion, eighty-one million, six hundred sixty-seven thousand, three hundred twenty-one".