1672138169 has 16 divisors (see below), whose sum is σ = 1835736000. Its totient is φ = 1513809216.

The previous prime is 1672138159. The next prime is 1672138211. The reversal of 1672138169 is 9618312761.

It is a cyclic number.

It is not a de Polignac number, because 1672138169 - 2¹² = 1672134073 is a prime.

It is a super-2 number, since 2×1672138169² = 5592092112453345122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672138159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144407 + ... + 155555.

It is an arithmetic number, because the mean of its divisors is an integer number (114733500).

Almost surely, 2^1672138169 is an apocalyptic number.

It is an amenable number.

1672138169 is a deficient number, since it is larger than the sum of its proper divisors (163597831).

1672138169 is a wasteful number, since it uses less digits than its factorization.

1672138169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11384.

The product of its digits is 108864, while the sum is 44.

The square root of 1672138169 is about 40891.7860822929. The cubic root of 1672138169 is about 1186.9271209626.

The spelling of 1672138169 in words is "one billion, six hundred seventy-two million, one hundred thirty-eight thousand, one hundred sixty-nine".