161030268 has 210 divisors, whose sum is σ = 514330824. Its totient is φ = 44008272.

The previous prime is 161030267. The next prime is 161030269. The reversal of 161030268 is 862030161.

It is an interprime number because it is at equal distance from previous prime (161030267) and next prime (161030269).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161030267) by changing a digit.

It is a polite number, since it can be written in 69 ways as a sum of consecutive naturals, for example, 7001305 + ... + 7001327.

Almost surely, 2^161030268 is an apocalyptic number.

161030268 is a gapful number since it is divisible by the number (18) 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 161030268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257165412).

161030268 is an abundant number, since it is smaller than the sum of its proper divisors (353300556).

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

161030268 is an frugal number, since it uses more digits than its factorization.

161030268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161030268 is about 12689.7702106855. The cubic root of 161030268 is about 544.0462718354.

It can be divided in two parts, 1610 and 30268, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 161030268 in words is "one hundred sixty-one million, thirty thousand, two hundred sixty-eight".