1601120266 has 8 divisors (see below), whose sum is σ = 2402587584. Its totient is φ = 800257740.

The previous prime is 1601120263. The next prime is 1601120267. The reversal of 1601120266 is 6620211061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1601120266² = 5127172212391821512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1601120266.

It is not an unprimeable number, because it can be changed into a prime (1601120263) 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, 144520 + ... + 155203.

It is an arithmetic number, because the mean of its divisors is an integer number (300323448).

Almost surely, 2^1601120266 is an apocalyptic number.

1601120266 is a deficient number, since it is larger than the sum of its proper divisors (801467318).

1601120266 is a wasteful number, since it uses less digits than its factorization.

1601120266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302396.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1601120266 is about 40014.0008746938. Note that the first 3 decimals coincide. The cubic root of 1601120266 is about 1169.8800047390.

The spelling of 1601120266 in words is "one billion, six hundred one million, one hundred twenty thousand, two hundred sixty-six".