2153719826 has 8 divisors (see below), whose sum is σ = 3230777100. Its totient is φ = 1076794128.

The previous prime is 2153719769. The next prime is 2153719847. The reversal of 2153719826 is 6289173512.

It can be written as a sum of positive squares in 2 ways, for example, as 1772494201 + 381225625 = 42101^2 + 19525^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43700 + ... + 78848.

Almost surely, 2^2153719826 is an apocalyptic number.

2153719826 is a deficient number, since it is larger than the sum of its proper divisors (1077057274).

2153719826 is a wasteful number, since it uses less digits than its factorization.

2153719826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65788.

The product of its digits is 181440, while the sum is 44.

The square root of 2153719826 is about 46408.1870578888. The cubic root of 2153719826 is about 1291.4067993029.

The spelling of 2153719826 in words is "two billion, one hundred fifty-three million, seven hundred nineteen thousand, eight hundred twenty-six".