3972192281 has 2 divisors, whose sum is σ = 3972192282. Its totient is φ = 3972192280.

The previous prime is 3972192241. The next prime is 3972192293. The reversal of 3972192281 is 1822912793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2454310681 + 1517881600 = 49541^2 + 38960^2 .

It is a cyclic number.

It is not a de Polignac number, because 3972192281 - 2¹⁰ = 3972191257 is a prime.

It is a super-2 number, since 2×3972192281² = 31556623034471965922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3972192221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986096140 + 1986096141.

It is an arithmetic number, because the mean of its divisors is an integer number (1986096141).

Almost surely, 2^3972192281 is an apocalyptic number.

It is an amenable number.

3972192281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972192281 is an equidigital number, since it uses as much as digits as its factorization.

3972192281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 3972192281 is about 63025.3304711685. The cubic root of 3972192281 is about 1583.7139944683.

The spelling of 3972192281 in words is "three billion, nine hundred seventy-two million, one hundred ninety-two thousand, two hundred eighty-one".