1161604461 has 8 divisors (see below), whose sum is σ = 1554696000. Its totient is φ = 771457952.

The previous prime is 1161604429. The next prime is 1161604481. The reversal of 1161604461 is 1644061611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161604461 - 2⁵ = 1161604429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161604481) 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 7 ways as a sum of consecutive naturals, for example, 735336 + ... + 736913.

It is an arithmetic number, because the mean of its divisors is an integer number (194337000).

Almost surely, 2^1161604461 is an apocalyptic number.

It is an amenable number.

1161604461 is a deficient number, since it is larger than the sum of its proper divisors (393091539).

1161604461 is a wasteful number, since it uses less digits than its factorization.

1161604461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472515.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1161604461 is about 34082.3188911788. The cubic root of 1161604461 is about 1051.2017867713.

The spelling of 1161604461 in words is "one billion, one hundred sixty-one million, six hundred four thousand, four hundred sixty-one".