1169612661 has 16 divisors (see below), whose sum is σ = 1830437504. Its totient is φ = 650286144.

The previous prime is 1169612627. The next prime is 1169612669. The reversal of 1169612661 is 1662169611.

It is not a de Polignac number, because 1169612661 - 2⁹ = 1169612149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1169612669) 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, 751870 + ... + 753423.

It is an arithmetic number, because the mean of its divisors is an integer number (114402344).

Almost surely, 2^1169612661 is an apocalyptic number.

It is an amenable number.

1169612661 is a deficient number, since it is larger than the sum of its proper divisors (660824843).

1169612661 is a wasteful number, since it uses less digits than its factorization.

1169612661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505340.

The product of its digits is 23328, while the sum is 39.

The square root of 1169612661 is about 34199.6003046819. The cubic root of 1169612661 is about 1053.6119481314.

The spelling of 1169612661 in words is "one billion, one hundred sixty-nine million, six hundred twelve thousand, six hundred sixty-one".