1081952639 has 8 divisors (see below), whose sum is σ = 1092630000. Its totient is φ = 1071289152.

The previous prime is 1081952629. The next prime is 1081952671. The reversal of 1081952639 is 9362591801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081952639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081952639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081952629) 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 7 ways as a sum of consecutive naturals, for example, 226427 + ... + 231155.

It is an arithmetic number, because the mean of its divisors is an integer number (136578750).

Almost surely, 2^1081952639 is an apocalyptic number.

1081952639 is a deficient number, since it is larger than the sum of its proper divisors (10677361).

1081952639 is a wasteful number, since it uses less digits than its factorization.

1081952639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1081952639 is about 32893.0484905246. The cubic root of 1081952639 is about 1026.6035227207.

The spelling of 1081952639 in words is "one billion, eighty-one million, nine hundred fifty-two thousand, six hundred thirty-nine".