361641630 has 128 divisors (see below), whose sum is σ = 1051315200. Its totient is φ = 77773824.

The previous prime is 361641619. The next prime is 361641667. The reversal of 361641630 is 36146163.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 929476 + ... + 929864.

It is an arithmetic number, because the mean of its divisors is an integer number (8213400).

Almost surely, 2^361641630 is an apocalyptic number.

361641630 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 361641630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525657600).

361641630 is an abundant number, since it is smaller than the sum of its proper divisors (689673570).

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

361641630 is a wasteful number, since it uses less digits than its factorization.

361641630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 361641630 is about 19016.8775039437. The cubic root of 361641630 is about 712.4583367451.

Adding to 361641630 its reverse (36146163), we get a palindrome (397787793).

The spelling of 361641630 in words is "three hundred sixty-one million, six hundred forty-one thousand, six hundred thirty".