1180290887 has 4 divisors (see below), whose sum is σ = 1242411480. Its totient is φ = 1118170296.

The previous prime is 1180290877. The next prime is 1180290893. The reversal of 1180290887 is 7880920811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7880920811 = 59 ⋅133574929.

It is a cyclic number.

It is not a de Polignac number, because 1180290887 - 2²² = 1176096583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180290817) by changing a digit.

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, 31060268 + ... + 31060305.

It is an arithmetic number, because the mean of its divisors is an integer number (310602870).

Almost surely, 2^1180290887 is an apocalyptic number.

1180290887 is a deficient number, since it is larger than the sum of its proper divisors (62120593).

1180290887 is an equidigital number, since it uses as much as digits as its factorization.

1180290887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62120592.

The product of its (nonzero) digits is 64512, while the sum is 44.

The square root of 1180290887 is about 34355.3618377103. The cubic root of 1180290887 is about 1056.8086305075.

The spelling of 1180290887 in words is "one billion, one hundred eighty million, two hundred ninety thousand, eight hundred eighty-seven".