166154536 has 8 divisors (see below), whose sum is σ = 311539770. Its totient is φ = 83077264.

The previous prime is 166154533. The next prime is 166154567. The reversal of 166154536 is 635451661.

It can be written as a sum of positive squares in only one way, i.e., 163993636 + 2160900 = 12806^2 + 1470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166154495 and 166154504.

It is not an unprimeable number, because it can be changed into a prime (166154533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10384651 + ... + 10384666.

Almost surely, 2^166154536 is an apocalyptic number.

It is an amenable number.

166154536 is a deficient number, since it is larger than the sum of its proper divisors (145385234).

166154536 is a wasteful number, since it uses less digits than its factorization.

166154536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20769323 (or 20769319 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 166154536 is about 12890.0944915078. The cubic root of 166154536 is about 549.7569570789.

The spelling of 166154536 in words is "one hundred sixty-six million, one hundred fifty-four thousand, five hundred thirty-six".