2164749 has 16 divisors (see below), whose sum is σ = 3001152. Its totient is φ = 1387008.

The previous prime is 2164739. The next prime is 2164787. The reversal of 2164749 is 9474612.

It is a happy number.

It is not a de Polignac number, because 2164749 - 2⁷ = 2164621 is a prime.

It is a super-2 number, since 2×2164749² = 9372276466002, which contains 22 as substring.

2164749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164739) 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, 12427 + ... + 12599.

It is an arithmetic number, because the mean of its divisors is an integer number (187572).

2^2164749 is an apocalyptic number.

It is an amenable number.

2164749 is a deficient number, since it is larger than the sum of its proper divisors (836403).

2164749 is a wasteful number, since it uses less digits than its factorization.

2164749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its digits is 12096, while the sum is 33.

The square root of 2164749 is about 1471.3086012119. The cubic root of 2164749 is about 129.3607473389.

The spelling of 2164749 in words is "two million, one hundred sixty-four thousand, seven hundred forty-nine".