1089695601 has 24 divisors (see below), whose sum is σ = 1647067136. Its totient is φ = 693385920.

The previous prime is 1089695591. The next prime is 1089695609. The reversal of 1089695601 is 1065969801.

1089695601 is a `hidden beast` number, since 1 + 0 + 89 + 6 + 9 + 560 + 1 = 666.

It is not a de Polignac number, because 1089695601 - 2⁵ = 1089695569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089695609) 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 23 ways as a sum of consecutive naturals, for example, 6385 + ... + 47118.

Almost surely, 2^1089695601 is an apocalyptic number.

It is an amenable number.

1089695601 is a deficient number, since it is larger than the sum of its proper divisors (557371535).

1089695601 is a wasteful number, since it uses less digits than its factorization.

1089695601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53613 (or 53610 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 1089695601 is about 33010.5377266109. The cubic root of 1089695601 is about 1029.0466564480.

The spelling of 1089695601 in words is "one billion, eighty-nine million, six hundred ninety-five thousand, six hundred one".