166411415 has 8 divisors (see below), whose sum is σ = 204564528. Its totient is φ = 129881920.

The previous prime is 166411411. The next prime is 166411439. The reversal of 166411415 is 514114661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166411415 - 2² = 166411411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166411411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405677 + ... + 406086.

It is an arithmetic number, because the mean of its divisors is an integer number (25570566).

Almost surely, 2^166411415 is an apocalyptic number.

166411415 is a deficient number, since it is larger than the sum of its proper divisors (38153113).

166411415 is an equidigital number, since it uses as much as digits as its factorization.

166411415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811809.

The product of its digits is 2880, while the sum is 29.

The square root of 166411415 is about 12900.0548448447. The cubic root of 166411415 is about 550.0401237946.

The spelling of 166411415 in words is "one hundred sixty-six million, four hundred eleven thousand, four hundred fifteen".