2801634221 has 8 divisors (see below), whose sum is σ = 2971382904. Its totient is φ = 2632435200.

The previous prime is 2801634133. The next prime is 2801634229. The reversal of 2801634221 is 1224361082.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 741472900 + 2060161321 = 27230^2 + 45389^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2801634221 - 2²² = 2797439917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801634229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126890 + ... + 147323.

It is an arithmetic number, because the mean of its divisors is an integer number (371422863).

Almost surely, 2^2801634221 is an apocalyptic number.

It is an amenable number.

2801634221 is a deficient number, since it is larger than the sum of its proper divisors (169748683).

2801634221 is a wasteful number, since it uses less digits than its factorization.

2801634221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274831.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2801634221 is about 52930.4659057522. The cubic root of 2801634221 is about 1409.7339036440.

The spelling of 2801634221 in words is "two billion, eight hundred one million, six hundred thirty-four thousand, two hundred twenty-one".