1623371808149 has 36 divisors (see below), whose sum is σ = 2125940023116. Its totient is φ = 1228581180288.

The previous prime is 1623371808067. The next prime is 1623371808187. The reversal of 1623371808149 is 9418081733261.

It can be written as a sum of positive squares in 2 ways, for example, as 256385259025 + 1366986549124 = 506345^2 + 1169182^2 .

It is not a de Polignac number, because 1623371808149 - 2²⁴ = 1623355030933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1623371808149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623371808449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2071784 + ... + 2745729.

It is an arithmetic number, because the mean of its divisors is an integer number (59053889531).

Almost surely, 2^{1623371808149} is an apocalyptic number.

It is an amenable number.

1623371808149 is a deficient number, since it is larger than the sum of its proper divisors (502568214967).

1623371808149 is a wasteful number, since it uses less digits than its factorization.

1623371808149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817586 (or 4817556 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 1623371808149 in words is "one trillion, six hundred twenty-three billion, three hundred seventy-one million, eight hundred eight thousand, one hundred forty-nine".