161450100 has 216 divisors, whose sum is σ = 591281600. Its totient is φ = 36832320.

The previous prime is 161450083. The next prime is 161450111. The reversal of 161450100 is 1054161.

161450100 is a `hidden beast` number, since 1 + 614 + 50 + 1 + 0 + 0 = 666.

161450100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161450100² = 52132269580020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 308439 + ... + 308961.

Almost surely, 2^161450100 is an apocalyptic number.

161450100 is a gapful number since it is divisible by the number (10) 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 161450100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295640800).

161450100 is an abundant number, since it is smaller than the sum of its proper divisors (429831500).

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

161450100 is a wasteful number, since it uses less digits than its factorization.

161450100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 161450100 is about 12706.3015862209. The cubic root of 161450100 is about 544.5186671296.

The spelling of 161450100 in words is "one hundred sixty-one million, four hundred fifty thousand, one hundred".