2801385505 has 8 divisors (see below), whose sum is σ = 3384225000. Its totient is φ = 2226066816.

The previous prime is 2801385497. The next prime is 2801385523. The reversal of 2801385505 is 5055831082.

It can be written as a sum of positive squares in 4 ways, for example, as 12321 + 2801373184 = 111^2 + 52928^2 .

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 2801385505 - 2³ = 2801385497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1879380 + ... + 1880869.

It is an arithmetic number, because the mean of its divisors is an integer number (423028125).

Almost surely, 2^2801385505 is an apocalyptic number.

It is an amenable number.

2801385505 is a deficient number, since it is larger than the sum of its proper divisors (582839495).

2801385505 is a wasteful number, since it uses less digits than its factorization.

2801385505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760403.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 2801385505 is about 52928.1163938412. The cubic root of 2801385505 is about 1409.6921858791.

The spelling of 2801385505 in words is "two billion, eight hundred one million, three hundred eighty-five thousand, five hundred five".