1161540026 has 16 divisors (see below), whose sum is σ = 1754875584. Its totient is φ = 576597024.

The previous prime is 1161540013. The next prime is 1161540047. The reversal of 1161540026 is 6200451611.

It is a junction number, because it is equal to n+sod(n) for n = 1161539977 and 1161540004.

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 7 ways as a sum of consecutive naturals, for example, 157886 + ... + 165078.

It is an arithmetic number, because the mean of its divisors is an integer number (109679724).

Almost surely, 2^1161540026 is an apocalyptic number.

1161540026 is a deficient number, since it is larger than the sum of its proper divisors (593335558).

1161540026 is a wasteful number, since it uses less digits than its factorization.

1161540026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1161540026 is about 34081.3735932107. The cubic root of 1161540026 is about 1051.1823494494.

Adding to 1161540026 its reverse (6200451611), we get a palindrome (7361991637).

The spelling of 1161540026 in words is "one billion, one hundred sixty-one million, five hundred forty thousand, twenty-six".