1081156945 has 8 divisors (see below), whose sum is σ = 1415332800. Its totient is φ = 786295920.

The previous prime is 1081156931. The next prime is 1081156991. The reversal of 1081156945 is 5496511801.

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

It is not a de Polignac number, because 1081156945 - 2¹³ = 1081148753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1081156898 and 1081156907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9828645 + ... + 9828754.

It is an arithmetic number, because the mean of its divisors is an integer number (176916600).

Almost surely, 2^1081156945 is an apocalyptic number.

It is an amenable number.

1081156945 is a deficient number, since it is larger than the sum of its proper divisors (334175855).

1081156945 is a wasteful number, since it uses less digits than its factorization.

1081156945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19657415.

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 1081156945 is about 32880.9510963415. The cubic root of 1081156945 is about 1026.3517980263.

The spelling of 1081156945 in words is "one billion, eighty-one million, one hundred fifty-six thousand, nine hundred forty-five".