161487536 has 120 divisors (see below), whose sum is σ = 394818480. Its totient is φ = 63576576.

The previous prime is 161487527. The next prime is 161487551. The reversal of 161487536 is 635784161.

It is a junction number, because it is equal to n+sod(n) for n = 161487493 and 161487502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551006 + ... + 551298.

It is an arithmetic number, because the mean of its divisors is an integer number (3290154).

Almost surely, 2^161487536 is an apocalyptic number.

161487536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161487536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197409240).

161487536 is an abundant number, since it is smaller than the sum of its proper divisors (233330944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161487536 is a wasteful number, since it uses less digits than its factorization.

161487536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 358 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 161487536 is about 12707.7746281558. The cubic root of 161487536 is about 544.5607503605.

The spelling of 161487536 in words is "one hundred sixty-one million, four hundred eighty-seven thousand, five hundred thirty-six".