161098452 has 36 divisors (see below), whose sum is σ = 407665440. Its totient is φ = 53640912.

The previous prime is 161098411. The next prime is 161098501. The reversal of 161098452 is 254890161.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×161098452² = 51905422473592608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42199 + ... + 45857.

It is an arithmetic number, because the mean of its divisors is an integer number (11324040).

Almost surely, 2^161098452 is an apocalyptic number.

161098452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161098452 is an abundant number, since it is smaller than the sum of its proper divisors (246566988).

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

161098452 is a wasteful number, since it uses less digits than its factorization.

161098452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4892 (or 4887 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 161098452 is about 12692.4564998270. The cubic root of 161098452 is about 544.1230483260.

The spelling of 161098452 in words is "one hundred sixty-one million, ninety-eight thousand, four hundred fifty-two".