7172901806 has 16 divisors (see below), whose sum is σ = 12469593600. Its totient is φ = 3030803160.

The previous prime is 7172901803. The next prime is 7172901809. The reversal of 7172901806 is 6081092717.

It is an interprime number because it is at equal distance from previous prime (7172901803) and next prime (7172901809).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7172901803) 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, 3607106 + ... + 3609093.

It is an arithmetic number, because the mean of its divisors is an integer number (779349600).

Almost surely, 2^7172901806 is an apocalyptic number.

7172901806 is a deficient number, since it is larger than the sum of its proper divisors (5296691794).

7172901806 is a wasteful number, since it uses less digits than its factorization.

7172901806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216279.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 7172901806 is about 84692.9855773192. The cubic root of 7172901806 is about 1928.5532219740.

The spelling of 7172901806 in words is "seven billion, one hundred seventy-two million, nine hundred one thousand, eight hundred six".