2124746165 has 4 divisors (see below), whose sum is σ = 2549695404. Its totient is φ = 1699796928.

The previous prime is 2124746153. The next prime is 2124746179. The reversal of 2124746165 is 5616474212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 680062084 + 1444684081 = 26078^2 + 38009^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124746165 - 2⁶ = 2124746101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212474612 + ... + 212474621.

It is an arithmetic number, because the mean of its divisors is an integer number (637423851).

Almost surely, 2^2124746165 is an apocalyptic number.

It is an amenable number.

2124746165 is a deficient number, since it is larger than the sum of its proper divisors (424949239).

2124746165 is an equidigital number, since it uses as much as digits as its factorization.

2124746165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424949238.

The product of its digits is 80640, while the sum is 38.

The square root of 2124746165 is about 46094.9689771020. The cubic root of 2124746165 is about 1285.5896026034.

The spelling of 2124746165 in words is "two billion, one hundred twenty-four million, seven hundred forty-six thousand, one hundred sixty-five".