166047419 has 8 divisors (see below), whose sum is σ = 173441952. Its totient is φ = 158667520.

The previous prime is 166047407. The next prime is 166047421. The reversal of 166047419 is 914740661.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166047419 is a prime.

It is a super-2 number, since 2×166047419² = 55143490713123122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166047319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24107 + ... + 30219.

It is an arithmetic number, because the mean of its divisors is an integer number (21680244).

Almost surely, 2^166047419 is an apocalyptic number.

166047419 is a deficient number, since it is larger than the sum of its proper divisors (7394533).

166047419 is a wasteful number, since it uses less digits than its factorization.

166047419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166047419 is about 12885.9388094155. The cubic root of 166047419 is about 549.6387920327.

The spelling of 166047419 in words is "one hundred sixty-six million, forty-seven thousand, four hundred nineteen".