166161450 has 288 divisors, whose sum is σ = 541465344. Its totient is φ = 33384960.

The previous prime is 166161427. The next prime is 166161461. The reversal of 166161450 is 54161661.

It is a super-2 number, since 2×166161450² = 55219254932205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3535327 + ... + 3535373.

It is an arithmetic number, because the mean of its divisors is an integer number (1880088).

Almost surely, 2^166161450 is an apocalyptic number.

166161450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166161450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270732672).

166161450 is an abundant number, since it is smaller than the sum of its proper divisors (375303894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166161450 is a wasteful number, since it uses less digits than its factorization.

166161450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 166161450 is about 12890.3626791491. The cubic root of 166161450 is about 549.7645824437.

The spelling of 166161450 in words is "one hundred sixty-six million, one hundred sixty-one thousand, four hundred fifty".