3872235557 has 2 divisors, whose sum is σ = 3872235558. Its totient is φ = 3872235556.

The previous prime is 3872235533. The next prime is 3872235569. The reversal of 3872235557 is 7555322783.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2856474916 + 1015760641 = 53446^2 + 31871^2 .

It is a cyclic number.

It is not a de Polignac number, because 3872235557 - 2¹⁴ = 3872219173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3872235517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936117778 + 1936117779.

It is an arithmetic number, because the mean of its divisors is an integer number (1936117779).

Almost surely, 2^3872235557 is an apocalyptic number.

It is an amenable number.

3872235557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3872235557 is an equidigital number, since it uses as much as digits as its factorization.

3872235557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764000, while the sum is 47.

The square root of 3872235557 is about 62227.2894878123. The cubic root of 3872235557 is about 1570.3167247470.

The spelling of 3872235557 in words is "three billion, eight hundred seventy-two million, two hundred thirty-five thousand, five hundred fifty-seven".