1601617764 has 12 divisors (see below), whose sum is σ = 3737108144. Its totient is φ = 533872584.

The previous prime is 1601617763. The next prime is 1601617783. The reversal of 1601617764 is 4677161061.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1601617763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66734062 + ... + 66734085.

Almost surely, 2^1601617764 is an apocalyptic number.

It is an amenable number.

1601617764 is an abundant number, since it is smaller than the sum of its proper divisors (2135490380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1601617764 is a wasteful number, since it uses less digits than its factorization.

1601617764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133468154 (or 133468152 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 1601617764 is about 40020.2169409412. The cubic root of 1601617764 is about 1170.0011600544.

The spelling of 1601617764 in words is "one billion, six hundred one million, six hundred seventeen thousand, seven hundred sixty-four".