161633026 has 8 divisors (see below), whose sum is σ = 242506764. Its totient is φ = 80797440.

The previous prime is 161632997. The next prime is 161633033. The reversal of 161633026 is 620336161.

It can be written as a sum of positive squares in 2 ways, for example, as 155625625 + 6007401 = 12475^2 + 2451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161633026² = 52250470187833352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161632985 and 161633003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6346 + ... + 19066.

Almost surely, 2^161633026 is an apocalyptic number.

161633026 is a deficient number, since it is larger than the sum of its proper divisors (80873738).

161633026 is a wasteful number, since it uses less digits than its factorization.

161633026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19076.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 161633026 is about 12713.4977877844. The cubic root of 161633026 is about 544.7242394739.

Adding to 161633026 its reverse (620336161), we get a palindrome (781969187).

The spelling of 161633026 in words is "one hundred sixty-one million, six hundred thirty-three thousand, twenty-six".