163507537 has 4 divisors (see below), whose sum is σ = 165948016. Its totient is φ = 161067060.

The previous prime is 163507523. The next prime is 163507541. The reversal of 163507537 is 735705361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163507537 - 2²⁷ = 29289809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163507496 and 163507505.

It is not an unprimeable number, because it can be changed into a prime (163507637) 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, 1220139 + ... + 1220272.

It is an arithmetic number, because the mean of its divisors is an integer number (41487004).

Almost surely, 2^163507537 is an apocalyptic number.

It is an amenable number.

163507537 is a deficient number, since it is larger than the sum of its proper divisors (2440479).

163507537 is an equidigital number, since it uses as much as digits as its factorization.

163507537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440478.

The product of its (nonzero) digits is 66150, while the sum is 37.

The square root of 163507537 is about 12787.0065691701. The cubic root of 163507537 is about 546.8219326879.

The spelling of 163507537 in words is "one hundred sixty-three million, five hundred seven thousand, five hundred thirty-seven".