1161540415 has 16 divisors (see below), whose sum is σ = 1593525312. Its totient is φ = 796207104.

The previous prime is 1161540361. The next prime is 1161540427. The reversal of 1161540415 is 5140451611.

It is not a de Polignac number, because 1161540415 - 2⁷ = 1161540287 is a prime.

It is a super-2 number, since 2×1161540415² = 2698352271356744450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180127 + ... + 186463.

It is an arithmetic number, because the mean of its divisors is an integer number (99595332).

Almost surely, 2^1161540415 is an apocalyptic number.

1161540415 is a deficient number, since it is larger than the sum of its proper divisors (431984897).

1161540415 is an equidigital number, since it uses as much as digits as its factorization.

1161540415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11586.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1161540415 is about 34081.3793001398. The cubic root of 1161540415 is about 1051.1824667965.

The spelling of 1161540415 in words is "one billion, one hundred sixty-one million, five hundred forty thousand, four hundred fifteen".