1180789961 has 16 divisors (see below), whose sum is σ = 1347591168. Its totient is φ = 1024953600.

The previous prime is 1180789949. The next prime is 1180790003. The reversal of 1180789961 is 1699870811.

It is a cyclic number.

It is not a de Polignac number, because 1180789961 - 2¹⁰ = 1180788937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180789901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465266 + ... + 467796.

It is an arithmetic number, because the mean of its divisors is an integer number (84224448).

Almost surely, 2^1180789961 is an apocalyptic number.

It is an amenable number.

1180789961 is a deficient number, since it is larger than the sum of its proper divisors (166801207).

1180789961 is a wasteful number, since it uses less digits than its factorization.

1180789961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672.

The product of its (nonzero) digits is 217728, while the sum is 50.

The square root of 1180789961 is about 34362.6244777665. The cubic root of 1180789961 is about 1056.9575631124.

The spelling of 1180789961 in words is "one billion, one hundred eighty million, seven hundred eighty-nine thousand, nine hundred sixty-one".