1601445564 has 36 divisors (see below), whose sum is σ = 4224104976. Its totient is φ = 510605568.

The previous prime is 1601445563. The next prime is 1601445583. The reversal of 1601445564 is 4655441061.

1601445564 is a `hidden beast` number, since 1 + 60 + 1 + 44 + 556 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601445563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 966229 + ... + 967884.

Almost surely, 2^1601445564 is an apocalyptic number.

It is an amenable number.

1601445564 is an abundant number, since it is smaller than the sum of its proper divisors (2622659412).

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

1601445564 is a wasteful number, since it uses less digits than its factorization.

1601445564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934146 (or 1934141 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1601445564 is about 40018.0654704847. The cubic root of 1601445564 is about 1169.9592271568.

The spelling of 1601445564 in words is "one billion, six hundred one million, four hundred forty-five thousand, five hundred sixty-four".