1161860587 has 4 divisors (see below), whose sum is σ = 1162068640. Its totient is φ = 1161652536.

The previous prime is 1161860573. The next prime is 1161860593. The reversal of 1161860587 is 7850681611.

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 1161860587 - 2⁷ = 1161860459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161861587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95412 + ... + 106897.

It is an arithmetic number, because the mean of its divisors is an integer number (290517160).

Almost surely, 2^1161860587 is an apocalyptic number.

1161860587 is a deficient number, since it is larger than the sum of its proper divisors (208053).

1161860587 is an equidigital number, since it uses as much as digits as its factorization.

1161860587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208052.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1161860587 is about 34086.0761455466. The cubic root of 1161860587 is about 1051.2790420769.

The spelling of 1161860587 in words is "one billion, one hundred sixty-one million, eight hundred sixty thousand, five hundred eighty-seven".