1601720050 has 48 divisors (see below), whose sum is σ = 3477277440. Its totient is φ = 537471360.

The previous prime is 1601720039. The next prime is 1601720053. The reversal of 1601720050 is 500271061.

It is not an unprimeable number, because it can be changed into a prime (1601720053) 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 23 ways as a sum of consecutive naturals, for example, 32235 + ... + 65134.

It is an arithmetic number, because the mean of its divisors is an integer number (72443280).

Almost surely, 2^1601720050 is an apocalyptic number.

1601720050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1601720050 is an abundant number, since it is smaller than the sum of its proper divisors (1875557390).

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

1601720050 is a wasteful number, since it uses less digits than its factorization.

1601720050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97435 (or 97430 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1601720050 is about 40021.4948496430. The cubic root of 1601720050 is about 1170.0260665778.

The spelling of 1601720050 in words is "one billion, six hundred one million, seven hundred twenty thousand, fifty".