166195260 has 288 divisors, whose sum is σ = 657296640. Its totient is φ = 34473600.

The previous prime is 166195229. The next prime is 166195273. The reversal of 166195260 is 62591661.

166195260 is a `hidden beast` number, since 16 + 619 + 5 + 26 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 290775 + ... + 291345.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 2^166195260 is an apocalyptic number.

166195260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166195260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328648320).

166195260 is an abundant number, since it is smaller than the sum of its proper divisors (491101380).

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

166195260 is a wasteful number, since it uses less digits than its factorization.

166195260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 166195260 is about 12891.6740573131. The cubic root of 166195260 is about 549.8018680275.

The spelling of 166195260 in words is "one hundred sixty-six million, one hundred ninety-five thousand, two hundred sixty".