3609020961 has 128 divisors (see below), whose sum is σ = 6938624000. Its totient is φ = 1840345920.

The previous prime is 3609020903. The next prime is 3609020969. The reversal of 3609020961 is 1690209063.

3609020961 is a `hidden beast` number, since 360 + 90 + 209 + 6 + 1 = 666.

It is not a de Polignac number, because 3609020961 - 2¹⁰ = 3609019937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3609020969) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3731700 + ... + 3732666.

It is an arithmetic number, because the mean of its divisors is an integer number (54208000).

Almost surely, 2^3609020961 is an apocalyptic number.

3609020961 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3609020961 is a deficient number, since it is larger than the sum of its proper divisors (3329603039).

3609020961 is a wasteful number, since it uses less digits than its factorization.

3609020961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 3609020961 is about 60075.1276403138. The cubic root of 3609020961 is about 1533.8979539363.

The spelling of 3609020961 in words is "three billion, six hundred nine million, twenty thousand, nine hundred sixty-one".