1180651 has 4 divisors (see below), whose sum is σ = 1208152. Its totient is φ = 1153152.

The previous prime is 1180643. The next prime is 1180657. The reversal of 1180651 is 1560811.

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 1180651 - 2³ = 1180643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180657) 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, 13686 + ... + 13771.

It is an arithmetic number, because the mean of its divisors is an integer number (302038).

2^1180651 is an apocalyptic number.

1180651 is a deficient number, since it is larger than the sum of its proper divisors (27501).

1180651 is an equidigital number, since it uses as much as digits as its factorization.

1180651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27500.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1180651 is about 1086.5776548411. The cubic root of 1180651 is about 105.6916098882.

It can be divided in two parts, 1180 and 651, that multiplied together give a triangular number (768180 = T₁₂₃₉).

The spelling of 1180651 in words is "one million, one hundred eighty thousand, six hundred fifty-one".