2150749 has 4 divisors (see below), whose sum is σ = 2220160. Its totient is φ = 2081340.

The previous prime is 2150741. The next prime is 2150777. The reversal of 2150749 is 9470512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2150749 - 2³ = 2150741 is a prime.

It is a super-2 number, since 2×2150749² = 9251442522002, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34659 + ... + 34720.

It is an arithmetic number, because the mean of its divisors is an integer number (555040).

2^2150749 is an apocalyptic number.

It is an amenable number.

2150749 is a deficient number, since it is larger than the sum of its proper divisors (69411).

2150749 is an equidigital number, since it uses as much as digits as its factorization.

2150749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69410.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2150749 is about 1466.5432145014. The cubic root of 2150749 is about 129.0812740249.

The spelling of 2150749 in words is "two million, one hundred fifty thousand, seven hundred forty-nine".