1881262417 has 2 divisors, whose sum is σ = 1881262418. Its totient is φ = 1881262416.

The previous prime is 1881262403. The next prime is 1881262477. The reversal of 1881262417 is 7142621881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1502415121 + 378847296 = 38761^2 + 19464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1881262417 - 2¹¹ = 1881260369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1881262417.

It is not a weakly prime, because it can be changed into another prime (1881262477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940631208 + 940631209.

It is an arithmetic number, because the mean of its divisors is an integer number (940631209).

Almost surely, 2^1881262417 is an apocalyptic number.

It is an amenable number.

1881262417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881262417 is an equidigital number, since it uses as much as digits as its factorization.

1881262417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 40.

The square root of 1881262417 is about 43373.5220728038. The cubic root of 1881262417 is about 1234.4773514464.

The spelling of 1881262417 in words is "one billion, eight hundred eighty-one million, two hundred sixty-two thousand, four hundred seventeen".