2081915401 has 2 divisors, whose sum is σ = 2081915402. Its totient is φ = 2081915400.

The previous prime is 2081915383. The next prime is 2081915417. The reversal of 2081915401 is 1045191802.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2081549376 + 366025 = 45624^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081915401 - 2¹³ = 2081907209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2081910401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040957700 + 1040957701.

It is an arithmetic number, because the mean of its divisors is an integer number (1040957701).

Almost surely, 2^2081915401 is an apocalyptic number.

It is an amenable number.

2081915401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081915401 is an equidigital number, since it uses as much as digits as its factorization.

2081915401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 2081915401 is about 45628.0111444713. The cubic root of 2081915401 is about 1276.8925682492.

The spelling of 2081915401 in words is "two billion, eighty-one million, nine hundred fifteen thousand, four hundred one".