2155308373 has 2 divisors, whose sum is σ = 2155308374. Its totient is φ = 2155308372.

The previous prime is 2155308341. The next prime is 2155308439. The reversal of 2155308373 is 3738035512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2155094929 + 213444 = 46423^2 + 462^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155308373 - 2⁵ = 2155308341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155308313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077654186 + 1077654187.

It is an arithmetic number, because the mean of its divisors is an integer number (1077654187).

Almost surely, 2^2155308373 is an apocalyptic number.

It is an amenable number.

2155308373 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155308373 is an equidigital number, since it uses as much as digits as its factorization.

2155308373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2155308373 is about 46425.2988466418. The cubic root of 2155308373 is about 1291.7242278134.

The spelling of 2155308373 in words is "two billion, one hundred fifty-five million, three hundred eight thousand, three hundred seventy-three".