3720270166 has 4 divisors (see below), whose sum is σ = 5580405252. Its totient is φ = 1860135082.

The previous prime is 3720270163. The next prime is 3720270187. The reversal of 3720270166 is 6610720273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6610720273 = 2621 ⋅2522213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720270161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930067540 + ... + 930067543.

It is an arithmetic number, because the mean of its divisors is an integer number (1395101313).

Almost surely, 2^3720270166 is an apocalyptic number.

3720270166 is a deficient number, since it is larger than the sum of its proper divisors (1860135086).

3720270166 is a wasteful number, since it uses less digits than its factorization.

3720270166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860135085.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 3720270166 is about 60994.0174607313. The cubic root of 3720270166 is about 1549.4996881269.

The spelling of 3720270166 in words is "three billion, seven hundred twenty million, two hundred seventy thousand, one hundred sixty-six".