1011161015 has 4 divisors (see below), whose sum is σ = 1213393224. Its totient is φ = 808928808.

The previous prime is 1011160999. The next prime is 1011161023. The reversal of 1011161015 is 5101611101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011161015 - 2⁴ = 1011160999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011160984 and 1011161002.

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, 101116097 + ... + 101116106.

It is an arithmetic number, because the mean of its divisors is an integer number (303348306).

Almost surely, 2^1011161015 is an apocalyptic number.

1011161015 is a deficient number, since it is larger than the sum of its proper divisors (202232209).

1011161015 is an equidigital number, since it uses as much as digits as its factorization.

1011161015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202232208.

The product of its (nonzero) digits is 30, while the sum is 17.

The square root of 1011161015 is about 31798.7580732330. The cubic root of 1011161015 is about 1003.7065826041.

Adding to 1011161015 its reverse (5101611101), we get a palindrome (6112772116).

The spelling of 1011161015 in words is "one billion, eleven million, one hundred sixty-one thousand, fifteen".