1601212775 has 12 divisors (see below), whose sum is σ = 2049553344. Its totient is φ = 1239648000.

The previous prime is 1601212771. The next prime is 1601212787. The reversal of 1601212775 is 5772121061.

It is not a de Polignac number, because 1601212775 - 2² = 1601212771 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601212771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1032266 + ... + 1033815.

It is an arithmetic number, because the mean of its divisors is an integer number (170796112).

Almost surely, 2^1601212775 is an apocalyptic number.

1601212775 is a deficient number, since it is larger than the sum of its proper divisors (448340569).

1601212775 is a wasteful number, since it uses less digits than its factorization.

1601212775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066122 (or 2066117 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1601212775 is about 40015.1568158867. The cubic root of 1601212775 is about 1169.9025352858.

The spelling of 1601212775 in words is "one billion, six hundred one million, two hundred twelve thousand, seven hundred seventy-five".