166538496 has 144 divisors (see below), whose sum is σ = 475352640. Its totient is φ = 51609600.

The previous prime is 166538467. The next prime is 166538497. The reversal of 166538496 is 694835661.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166538497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473736 + ... + 1473848.

It is an arithmetic number, because the mean of its divisors is an integer number (3301060).

Almost surely, 2^166538496 is an apocalyptic number.

166538496 is a gapful number since it is divisible by the number (16) 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 166538496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237676320).

166538496 is an abundant number, since it is smaller than the sum of its proper divisors (308814144).

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

166538496 is a wasteful number, since it uses less digits than its factorization.

166538496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 238 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 166538496 is about 12904.9795040519. The cubic root of 166538496 is about 550.1801018993.

The spelling of 166538496 in words is "one hundred sixty-six million, five hundred thirty-eight thousand, four hundred ninety-six".