161422150 has 12 divisors (see below), whose sum is σ = 300245292. Its totient is φ = 64568840.

The previous prime is 161422147. The next prime is 161422159. The reversal of 161422150 is 51224161.

It is a super-2 number, since 2×161422150² = 52114221021245000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161422159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1614172 + ... + 1614271.

It is an arithmetic number, because the mean of its divisors is an integer number (25020441).

Almost surely, 2^161422150 is an apocalyptic number.

161422150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161422150 is a deficient number, since it is larger than the sum of its proper divisors (138823142).

161422150 is a wasteful number, since it uses less digits than its factorization.

161422150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228455 (or 3228450 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 161422150 is about 12705.2016906462. The cubic root of 161422150 is about 544.4872432303.

The spelling of 161422150 in words is "one hundred sixty-one million, four hundred twenty-two thousand, one hundred fifty".