168464437 has 2 divisors, whose sum is σ = 168464438. Its totient is φ = 168464436.

The previous prime is 168464389. The next prime is 168464467. The reversal of 168464437 is 734464861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119268241 + 49196196 = 10921^2 + 7014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168464437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168464393 and 168464402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168464467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84232218 + 84232219.

It is an arithmetic number, because the mean of its divisors is an integer number (84232219).

Almost surely, 2^168464437 is an apocalyptic number.

It is an amenable number.

168464437 is a deficient number, since it is larger than the sum of its proper divisors (1).

168464437 is an equidigital number, since it uses as much as digits as its factorization.

168464437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 43.

The square root of 168464437 is about 12979.3850778841. The cubic root of 168464437 is about 552.2928382582.

The spelling of 168464437 in words is "one hundred sixty-eight million, four hundred sixty-four thousand, four hundred thirty-seven".