2623136749 has 4 divisors (see below), whose sum is σ = 2623269564. Its totient is φ = 2623003936.

The previous prime is 2623136723. The next prime is 2623136753. The reversal of 2623136749 is 9476313262.

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 2154630724 + 468506025 = 46418^2 + 21645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2623136749 - 2⁵ = 2623136717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2623136849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30202 + ... + 78475.

It is an arithmetic number, because the mean of its divisors is an integer number (655817391).

Almost surely, 2^2623136749 is an apocalyptic number.

It is an amenable number.

2623136749 is a deficient number, since it is larger than the sum of its proper divisors (132815).

2623136749 is a wasteful number, since it uses less digits than its factorization.

2623136749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132814.

The product of its digits is 326592, while the sum is 43.

The square root of 2623136749 is about 51216.5671340827. The cubic root of 2623136749 is about 1379.1356256518.

The spelling of 2623136749 in words is "two billion, six hundred twenty-three million, one hundred thirty-six thousand, seven hundred forty-nine".