161133802 has 16 divisors (see below), whose sum is σ = 251433000. Its totient is φ = 77353920.

The previous prime is 161133787. The next prime is 161133821. The reversal of 161133802 is 208331161.

It can be written as a sum of positive squares in 4 ways, for example, as 77246521 + 83887281 = 8789^2 + 9159^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2824 + ... + 18172.

Almost surely, 2^161133802 is an apocalyptic number.

161133802 is a deficient number, since it is larger than the sum of its proper divisors (90299198).

161133802 is a wasteful number, since it uses less digits than its factorization.

161133802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15561.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 161133802 is about 12693.8489828736. The cubic root of 161133802 is about 544.1628445764.

Adding to 161133802 its reverse (208331161), we get a palindrome (369464963).

The spelling of 161133802 in words is "one hundred sixty-one million, one hundred thirty-three thousand, eight hundred two".