162993437 has 2 divisors, whose sum is σ = 162993438. Its totient is φ = 162993436.

The previous prime is 162993431. The next prime is 162993449. The reversal of 162993437 is 734399261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150454756 + 12538681 = 12266^2 + 3541^2 .

It is a cyclic number.

It is not a de Polignac number, because 162993437 - 2²² = 158799133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162993431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81496718 + 81496719.

It is an arithmetic number, because the mean of its divisors is an integer number (81496719).

Almost surely, 2^162993437 is an apocalyptic number.

It is an amenable number.

162993437 is a deficient number, since it is larger than the sum of its proper divisors (1).

162993437 is an equidigital number, since it uses as much as digits as its factorization.

162993437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 162993437 is about 12766.8883052998. Note that the first 3 decimals coincide. The cubic root of 162993437 is about 546.2482255876.

The spelling of 162993437 in words is "one hundred sixty-two million, nine hundred ninety-three thousand, four hundred thirty-seven".