161862802 has 8 divisors (see below), whose sum is σ = 245198412. Its totient is φ = 80130000.

The previous prime is 161862773. The next prime is 161862803. The reversal of 161862802 is 208268161.

It can be written as a sum of positive squares in 2 ways, for example, as 148620481 + 13242321 = 12191^2 + 3639^2 .

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

It is not an unprimeable number, because it can be changed into a prime (161862803) by changing a digit.

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, 400449 + ... + 400852.

Almost surely, 2^161862802 is an apocalyptic number.

161862802 is a deficient number, since it is larger than the sum of its proper divisors (83335610).

161862802 is a wasteful number, since it uses less digits than its factorization.

161862802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801404.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 161862802 is about 12722.5312732962. The cubic root of 161862802 is about 544.9822422180.

The spelling of 161862802 in words is "one hundred sixty-one million, eight hundred sixty-two thousand, eight hundred two".