161486137 has 4 divisors (see below), whose sum is σ = 161548416. Its totient is φ = 161423860.

The previous prime is 161486089. The next prime is 161486141. The reversal of 161486137 is 731684161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 731684161 = 13 ⋅56283397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161486137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161486096 and 161486105.

It is not an unprimeable number, because it can be changed into a prime (161426137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27073 + ... + 32494.

It is an arithmetic number, because the mean of its divisors is an integer number (40387104).

Almost surely, 2^161486137 is an apocalyptic number.

It is an amenable number.

161486137 is a deficient number, since it is larger than the sum of its proper divisors (62279).

161486137 is an equidigital number, since it uses as much as digits as its factorization.

161486137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62278.

The product of its digits is 24192, while the sum is 37.

The square root of 161486137 is about 12707.7195829936. The cubic root of 161486137 is about 544.5591778084.

The spelling of 161486137 in words is "one hundred sixty-one million, four hundred eighty-six thousand, one hundred thirty-seven".