1901883281 has 2 divisors, whose sum is σ = 1901883282. Its totient is φ = 1901883280.

The previous prime is 1901883259. The next prime is 1901883289. The reversal of 1901883281 is 1823881091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275632656 + 626250625 = 35716^2 + 25025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1901883281 is a prime.

It is a super-2 number, since 2×1901883281² = 7234320029094649922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1901883289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950941640 + 950941641.

It is an arithmetic number, because the mean of its divisors is an integer number (950941641).

Almost surely, 2^1901883281 is an apocalyptic number.

It is an amenable number.

1901883281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901883281 is an equidigital number, since it uses as much as digits as its factorization.

1901883281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 1901883281 is about 43610.5867995376. The cubic root of 1901883281 is about 1238.9714157088.

The spelling of 1901883281 in words is "one billion, nine hundred one million, eight hundred eighty-three thousand, two hundred eighty-one".