166156616 has 8 divisors (see below), whose sum is σ = 311543670. Its totient is φ = 83078304.

The previous prime is 166156607. The next prime is 166156633. The reversal of 166156616 is 616651661.

It is a happy number.

166156616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 93122500 + 73034116 = 9650^2 + 8546^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 166156616.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10384781 + ... + 10384796.

Almost surely, 2^166156616 is an apocalyptic number.

It is an amenable number.

166156616 is a deficient number, since it is larger than the sum of its proper divisors (145387054).

166156616 is a wasteful number, since it uses less digits than its factorization.

166156616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20769583 (or 20769579 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 166156616 is about 12890.1751733636. The cubic root of 166156616 is about 549.7592511073.

The spelling of 166156616 in words is "one hundred sixty-six million, one hundred fifty-six thousand, six hundred sixteen".