361618530 has 192 divisors, whose sum is σ = 1103155200. Its totient is φ = 75188736.

The previous prime is 361618513. The next prime is 361618531. The reversal of 361618530 is 35816163.

It is a super-2 number, since 2×361618530² = 261535922478721800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 361618491 and 361618500.

It is not an unprimeable number, because it can be changed into a prime (361618531) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2426896 + ... + 2427044.

It is an arithmetic number, because the mean of its divisors is an integer number (5745600).

Almost surely, 2^361618530 is an apocalyptic number.

361618530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 361618530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551577600).

361618530 is an abundant number, since it is smaller than the sum of its proper divisors (741536670).

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

361618530 is a wasteful number, since it uses less digits than its factorization.

361618530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 361618530 is about 19016.2701390152. The cubic root of 361618530 is about 712.4431669042.

The spelling of 361618530 in words is "three hundred sixty-one million, six hundred eighteen thousand, five hundred thirty".