2819673 has 6 divisors (see below), whose sum is σ = 4072874. Its totient is φ = 1879776.

The previous prime is 2819651. The next prime is 2819681. The reversal of 2819673 is 3769182.

It can be written as a sum of positive squares in only one way, i.e., 1710864 + 1108809 = 1308^2 + 1053^2 .

It is not a de Polignac number, because 2819673 - 2¹⁰ = 2818649 is a prime.

It is an Ulam number.

It is a Duffinian number.

2819673 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2819633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156640 + ... + 156657.

2^2819673 is an apocalyptic number.

It is an amenable number.

2819673 is a deficient number, since it is larger than the sum of its proper divisors (1253201).

2819673 is a wasteful number, since it uses less digits than its factorization.

2819673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313303 (or 313300 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2819673 is about 1679.1881967189. The cubic root of 2819673 is about 141.2753033741.

It can be divided in two parts, 28 and 19673, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 2819673 in words is "two million, eight hundred nineteen thousand, six hundred seventy-three".