2134923649 has 4 divisors (see below), whose sum is σ = 2135320900. Its totient is φ = 2134526400.

The previous prime is 2134923647. The next prime is 2134923677. The reversal of 2134923649 is 9463294312.

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 577200625 + 1557723024 = 24025^2 + 39468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134923649 - 2¹ = 2134923647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2134923647) 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, 190452 + ... + 201349.

It is an arithmetic number, because the mean of its divisors is an integer number (533830225).

Almost surely, 2^2134923649 is an apocalyptic number.

It is an amenable number.

2134923649 is a deficient number, since it is larger than the sum of its proper divisors (397251).

2134923649 is an equidigital number, since it uses as much as digits as its factorization.

2134923649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397250.

The product of its digits is 279936, while the sum is 43.

The square root of 2134923649 is about 46205.2340000567. The cubic root of 2134923649 is about 1287.6389818736.

The spelling of 2134923649 in words is "two billion, one hundred thirty-four million, nine hundred twenty-three thousand, six hundred forty-nine".