161541602 has 16 divisors (see below), whose sum is σ = 244785024. Its totient is φ = 79950000.

The previous prime is 161541563. The next prime is 161541607. The reversal of 161541602 is 206145161.

161541602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×161541602³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (161541607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196352 + ... + 197172.

It is an arithmetic number, because the mean of its divisors is an integer number (15299064).

Almost surely, 2^161541602 is an apocalyptic number.

161541602 is a deficient number, since it is larger than the sum of its proper divisors (83243422).

161541602 is a wasteful number, since it uses less digits than its factorization.

161541602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 161541602 is about 12709.9017305406. The cubic root of 161541602 is about 544.6215165288.

Adding to 161541602 its reverse (206145161), we get a palindrome (367686763).

The spelling of 161541602 in words is "one hundred sixty-one million, five hundred forty-one thousand, six hundred two".