161022010 has 8 divisors (see below), whose sum is σ = 289839636. Its totient is φ = 64408800.

The previous prime is 161021957. The next prime is 161022019. The reversal of 161022010 is 10220161.

It can be written as a sum of positive squares in 2 ways, for example, as 152744881 + 8277129 = 12359^2 + 2877^2 .

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 (161022019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8051091 + ... + 8051110.

Almost surely, 2^161022010 is an apocalyptic number.

161022010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161022010 is a deficient number, since it is larger than the sum of its proper divisors (128817626).

161022010 is a wasteful number, since it uses less digits than its factorization.

161022010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16102208.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 161022010 is about 12689.4448263114. Note that the first 3 decimals coincide. The cubic root of 161022010 is about 544.0369716979.

Adding to 161022010 its reverse (10220161), we get a palindrome (171242171).

The spelling of 161022010 in words is "one hundred sixty-one million, twenty-two thousand, ten".