2801391427 has 4 divisors (see below), whose sum is σ = 2966179176. Its totient is φ = 2636603680.

The previous prime is 2801391403. The next prime is 2801391443. The reversal of 2801391427 is 7241931082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2801391427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2801391487) 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 3 ways as a sum of consecutive naturals, for example, 82393849 + ... + 82393882.

It is an arithmetic number, because the mean of its divisors is an integer number (741544794).

Almost surely, 2^2801391427 is an apocalyptic number.

2801391427 is a deficient number, since it is larger than the sum of its proper divisors (164787749).

2801391427 is a wasteful number, since it uses less digits than its factorization.

2801391427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164787748.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2801391427 is about 52928.1723376124. The cubic root of 2801391427 is about 1409.6931792198.

The spelling of 2801391427 in words is "two billion, eight hundred one million, three hundred ninety-one thousand, four hundred twenty-seven".