166145463 has 18 divisors (see below), whose sum is σ = 263790072. Its totient is φ = 100693560.

The previous prime is 166145417. The next prime is 166145477. The reversal of 166145463 is 364541661.

It is a happy number.

It is not a de Polignac number, because 166145463 - 2²² = 161951159 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166140463) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 75195 + ... + 77372.

It is an arithmetic number, because the mean of its divisors is an integer number (14655004).

Almost surely, 2^166145463 is an apocalyptic number.

166145463 is a deficient number, since it is larger than the sum of its proper divisors (97644609).

166145463 is a wasteful number, since it uses less digits than its factorization.

166145463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152595 (or 152581 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 166145463 is about 12889.7425497952. The cubic root of 166145463 is about 549.7469502588.

The spelling of 166145463 in words is "one hundred sixty-six million, one hundred forty-five thousand, four hundred sixty-three".