161361532 has 12 divisors (see below), whose sum is σ = 282589776. Its totient is φ = 80621600.

The previous prime is 161361511. The next prime is 161361553. The reversal of 161361532 is 235163161.

It is an interprime number because it is at equal distance from previous prime (161361511) and next prime (161361553).

It is a self number, because there is not a number n which added to its sum of digits gives 161361532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8344 + ... + 19807.

It is an arithmetic number, because the mean of its divisors is an integer number (23549148).

Almost surely, 2^161361532 is an apocalyptic number.

It is an amenable number.

161361532 is a deficient number, since it is larger than the sum of its proper divisors (121228244).

161361532 is a wasteful number, since it uses less digits than its factorization.

161361532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29588 (or 29586 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 161361532 is about 12702.8159082937. The cubic root of 161361532 is about 544.4190785658.

The spelling of 161361532 in words is "one hundred sixty-one million, three hundred sixty-one thousand, five hundred thirty-two".