1672788166 has 24 divisors (see below), whose sum is σ = 2932714296. Its totient is φ = 713502720.

The previous prime is 1672788163. The next prime is 1672788181. The reversal of 1672788166 is 6618872761.

It is a Smith number, since the sum of its digits (52) 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 (1672788163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19771 + ... + 61126.

It is an arithmetic number, because the mean of its divisors is an integer number (122196429).

Almost surely, 2^1672788166 is an apocalyptic number.

1672788166 is a deficient number, since it is larger than the sum of its proper divisors (1259926130).

1672788166 is a wasteful number, since it uses less digits than its factorization.

1672788166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81124 (or 81117 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 1672788166 is about 40899.7330798136. The cubic root of 1672788166 is about 1187.0808959591.

The spelling of 1672788166 in words is "one billion, six hundred seventy-two million, seven hundred eighty-eight thousand, one hundred sixty-six".