1180649 has 4 divisors (see below), whose sum is σ = 1200720. Its totient is φ = 1160580.

The previous prime is 1180643. The next prime is 1180657. The reversal of 1180649 is 9460811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1180649 - 2¹⁶ = 1115113 is a prime.

It is a super-2 number, since 2×1180649² = 2787864122402, which contains 22 as substring.

It is a Duffinian number.

1180649 is a modest number, since divided by 649 gives 118 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1180643) 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, 9947 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (300180).

2^1180649 is an apocalyptic number.

It is an amenable number.

1180649 is a deficient number, since it is larger than the sum of its proper divisors (20071).

1180649 is an equidigital number, since it uses as much as digits as its factorization.

1180649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20070.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1180649 is about 1086.5767345199. The cubic root of 1180649 is about 105.6915502083.

The spelling of 1180649 in words is "one million, one hundred eighty thousand, six hundred forty-nine".