161370630 has 80 divisors (see below), whose sum is σ = 459470880. Its totient is φ = 40497408.

The previous prime is 161370623. The next prime is 161370689. The reversal of 161370630 is 36073161.

161370630 is a `hidden beast` number, since 16 + 13 + 7 + 0 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 161370594 and 161370603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7911 + ... + 19629.

It is an arithmetic number, because the mean of its divisors is an integer number (5743386).

Almost surely, 2^161370630 is an apocalyptic number.

161370630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161370630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229735440).

161370630 is an abundant number, since it is smaller than the sum of its proper divisors (298100250).

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

161370630 is a wasteful number, since it uses less digits than its factorization.

161370630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11755 (or 11746 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 161370630 is about 12703.1740128206. The cubic root of 161370630 is about 544.4293103140.

The spelling of 161370630 in words is "one hundred sixty-one million, three hundred seventy thousand, six hundred thirty".