1601161276 has 24 divisors (see below), whose sum is σ = 3291899184. Its totient is φ = 671815680.

The previous prime is 1601161271. The next prime is 1601161283. The reversal of 1601161276 is 6721611061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601161271) 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 7 ways as a sum of consecutive naturals, for example, 1399045 + ... + 1400188.

It is an arithmetic number, because the mean of its divisors is an integer number (137162466).

Almost surely, 2^1601161276 is an apocalyptic number.

It is an amenable number.

1601161276 is an abundant number, since it is smaller than the sum of its proper divisors (1690737908).

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

1601161276 is a wasteful number, since it uses less digits than its factorization.

1601161276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799261 (or 2799259 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1601161276 is about 40014.5133170454. The cubic root of 1601161276 is about 1169.8899928227.

The spelling of 1601161276 in words is "one billion, six hundred one million, one hundred sixty-one thousand, two hundred seventy-six".