1601775616 has 48 divisors (see below), whose sum is σ = 3660340320. Its totient is φ = 686469120.

The previous prime is 1601775613. The next prime is 1601775619. The reversal of 1601775616 is 6165771061.

It is an interprime number because it is at equal distance from previous prime (1601775613) and next prime (1601775619).

It is not an unprimeable number, because it can be changed into a prime (1601775613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41530 + ... + 70201.

It is an arithmetic number, because the mean of its divisors is an integer number (76257090).

Almost surely, 2^1601775616 is an apocalyptic number.

1601775616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1601775616 is an abundant number, since it is smaller than the sum of its proper divisors (2058564704).

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

1601775616 is an equidigital number, since it uses as much as digits as its factorization.

1601775616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111760 (or 111740 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 1601775616 is about 40022.1890455782. The cubic root of 1601775616 is about 1170.0395963905.

The spelling of 1601775616 in words is "one billion, six hundred one million, seven hundred seventy-five thousand, six hundred sixteen".