161461982 has 16 divisors (see below), whose sum is σ = 264822912. Its totient is φ = 73221720.

The previous prime is 161461939. The next prime is 161461987. The reversal of 161461982 is 289164161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161461987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463 + ... + 18029.

It is an arithmetic number, because the mean of its divisors is an integer number (16551432).

Almost surely, 2^161461982 is an apocalyptic number.

161461982 is a deficient number, since it is larger than the sum of its proper divisors (103360930).

161461982 is a wasteful number, since it uses less digits than its factorization.

161461982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023.

The product of its digits is 20736, while the sum is 38.

The square root of 161461982 is about 12706.7691408949. The cubic root of 161461982 is about 544.5320248422.

Multiplying 161461982 by its sum of digits (38), we get a palindrome (6135555316).

The spelling of 161461982 in words is "one hundred sixty-one million, four hundred sixty-one thousand, nine hundred eighty-two".