8001783901 has 4 divisors (see below), whose sum is σ = 8196949404. Its totient is φ = 7806618400.

The previous prime is 8001783893. The next prime is 8001783917. The reversal of 8001783901 is 1093871008.

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

It can be written as a sum of positive squares in 2 ways, for example, as 364771801 + 7637012100 = 19099^2 + 87390^2 .

It is a cyclic number.

It is not a de Polignac number, because 8001783901 - 2³ = 8001783893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001783991) 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, 97582690 + ... + 97582771.

It is an arithmetic number, because the mean of its divisors is an integer number (2049237351).

Almost surely, 2^8001783901 is an apocalyptic number.

It is an amenable number.

8001783901 is a deficient number, since it is larger than the sum of its proper divisors (195165503).

8001783901 is a wasteful number, since it uses less digits than its factorization.

8001783901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195165502.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 8001783901 is about 89452.6908538810. The cubic root of 8001783901 is about 2000.1486473684.

The spelling of 8001783901 in words is "eight billion, one million, seven hundred eighty-three thousand, nine hundred one".