2165343437 has 2 divisors, whose sum is σ = 2165343438. Its totient is φ = 2165343436.

The previous prime is 2165343391. The next prime is 2165343449. The reversal of 2165343437 is 7343435612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2055806281 + 109537156 = 45341^2 + 10466^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165343437 - 2⁸ = 2165343181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2165343437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165343137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082671718 + 1082671719.

It is an arithmetic number, because the mean of its divisors is an integer number (1082671719).

Almost surely, 2^2165343437 is an apocalyptic number.

It is an amenable number.

2165343437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165343437 is an equidigital number, since it uses as much as digits as its factorization.

2165343437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 38.

The square root of 2165343437 is about 46533.2508750463. The cubic root of 2165343437 is about 1293.7258701436.

The spelling of 2165343437 in words is "two billion, one hundred sixty-five million, three hundred forty-three thousand, four hundred thirty-seven".