161589602 has 8 divisors (see below), whose sum is σ = 245452800. Its totient is φ = 79772004.

The previous prime is 161589601. The next prime is 161589611. The reversal of 161589602 is 206985161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161589602² = 52222398949036808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161589601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511202 + ... + 511517.

It is an arithmetic number, because the mean of its divisors is an integer number (30681600).

Almost surely, 2^161589602 is an apocalyptic number.

161589602 is a deficient number, since it is larger than the sum of its proper divisors (83863198).

161589602 is a wasteful number, since it uses less digits than its factorization.

161589602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022800.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 161589602 is about 12711.7898818380. The cubic root of 161589602 is about 544.6754536027.

The spelling of 161589602 in words is "one hundred sixty-one million, five hundred eighty-nine thousand, six hundred two".