163137439 has 4 divisors (see below), whose sum is σ = 171723640. Its totient is φ = 154551240.

The previous prime is 163137397. The next prime is 163137451. The reversal of 163137439 is 934731361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934731361 = 1367 ⋅683783.

It is a cyclic number.

It is not a de Polignac number, because 163137439 - 2²¹ = 161040287 is a prime.

It is a super-2 number, since 2×163137439² = 53227648006957442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163137398 and 163137407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163137839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4293072 + ... + 4293109.

It is an arithmetic number, because the mean of its divisors is an integer number (42930910).

Almost surely, 2^163137439 is an apocalyptic number.

163137439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

163137439 is a deficient number, since it is larger than the sum of its proper divisors (8586201).

163137439 is an equidigital number, since it uses as much as digits as its factorization.

163137439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8586200.

The product of its digits is 40824, while the sum is 37.

The square root of 163137439 is about 12772.5267273159. The cubic root of 163137439 is about 546.4090453208.

The spelling of 163137439 in words is "one hundred sixty-three million, one hundred thirty-seven thousand, four hundred thirty-nine".