166345454 has 8 divisors (see below), whose sum is σ = 272201688. Its totient is φ = 75611560.

The previous prime is 166345447. The next prime is 166345463. The reversal of 166345454 is 454543661.

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

It is a super-2 number, since 2×166345454² = 55341620132932232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3780557 + ... + 3780600.

It is an arithmetic number, because the mean of its divisors is an integer number (34025211).

Almost surely, 2^166345454 is an apocalyptic number.

166345454 is a deficient number, since it is larger than the sum of its proper divisors (105856234).

166345454 is a wasteful number, since it uses less digits than its factorization.

166345454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7561170.

The product of its digits is 172800, while the sum is 38.

The square root of 166345454 is about 12897.4979744135. The cubic root of 166345454 is about 549.9674404968.

The spelling of 166345454 in words is "one hundred sixty-six million, three hundred forty-five thousand, four hundred fifty-four".