161136826 has 8 divisors (see below), whose sum is σ = 241779060. Its totient is φ = 80543808.

The previous prime is 161136803. The next prime is 161136841. The reversal of 161136826 is 628631161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 154629225 + 6507601 = 12435^2 + 2551^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 161136791 and 161136800.

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 3 ways as a sum of consecutive naturals, for example, 2581 + ... + 18136.

Almost surely, 2^161136826 is an apocalyptic number.

161136826 is a deficient number, since it is larger than the sum of its proper divisors (80642234).

161136826 is a wasteful number, since it uses less digits than its factorization.

161136826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24608.

The product of its digits is 10368, while the sum is 34.

The square root of 161136826 is about 12693.9680951230. The cubic root of 161136826 is about 544.1662486587.

Adding to 161136826 its reverse (628631161), we get a palindrome (789767987).

The spelling of 161136826 in words is "one hundred sixty-one million, one hundred thirty-six thousand, eight hundred twenty-six".