166113784 has 8 divisors (see below), whose sum is σ = 311463360. Its totient is φ = 83056888.

The previous prime is 166113781. The next prime is 166113811. The reversal of 166113784 is 487311661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166113781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382104 + ... + 10382119.

It is an arithmetic number, because the mean of its divisors is an integer number (38932920).

Almost surely, 2^166113784 is an apocalyptic number.

It is an amenable number.

166113784 is a deficient number, since it is larger than the sum of its proper divisors (145349576).

166113784 is a wasteful number, since it uses less digits than its factorization.

166113784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20764229 (or 20764225 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 166113784 is about 12888.5136458786. The cubic root of 166113784 is about 549.7120079050.

The spelling of 166113784 in words is "one hundred sixty-six million, one hundred thirteen thousand, seven hundred eighty-four".