1081069915 has 4 divisors (see below), whose sum is σ = 1297283904. Its totient is φ = 864855928.

The previous prime is 1081069903. The next prime is 1081069931. The reversal of 1081069915 is 5199601801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081069915 is a prime.

It is a super-2 number, since 2×1081069915² = 2337424322236214450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108106987 + ... + 108106996.

It is an arithmetic number, because the mean of its divisors is an integer number (324320976).

Almost surely, 2^1081069915 is an apocalyptic number.

1081069915 is a deficient number, since it is larger than the sum of its proper divisors (216213989).

1081069915 is an equidigital number, since it uses as much as digits as its factorization.

1081069915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216213988.

The product of its (nonzero) digits is 19440, while the sum is 40.

The square root of 1081069915 is about 32879.6276590840. The cubic root of 1081069915 is about 1026.3242578392.

The spelling of 1081069915 in words is "one billion, eighty-one million, sixty-nine thousand, nine hundred fifteen".