161426582 has 4 divisors (see below), whose sum is σ = 242139876. Its totient is φ = 80713290.

The previous prime is 161426569. The next prime is 161426609. The reversal of 161426582 is 285624161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 285624161 = 29 ⋅9849109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40356644 + ... + 40356647.

It is an arithmetic number, because the mean of its divisors is an integer number (60534969).

Almost surely, 2^161426582 is an apocalyptic number.

161426582 is a deficient number, since it is larger than the sum of its proper divisors (80713294).

161426582 is an equidigital number, since it uses as much as digits as its factorization.

161426582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80713293.

The product of its digits is 23040, while the sum is 35.

The square root of 161426582 is about 12705.3761062001. The cubic root of 161426582 is about 544.4922263246.

The spelling of 161426582 in words is "one hundred sixty-one million, four hundred twenty-six thousand, five hundred eighty-two".