1881138151 has 2 divisors, whose sum is σ = 1881138152. Its totient is φ = 1881138150.

The previous prime is 1881138143. The next prime is 1881138173. The reversal of 1881138151 is 1518311881.

It is a weak prime.

It is an emirp because it is prime and its reverse (1518311881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1881138151 - 2³ = 1881138143 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1881138151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1881138121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940569075 + 940569076.

It is an arithmetic number, because the mean of its divisors is an integer number (940569076).

Almost surely, 2^1881138151 is an apocalyptic number.

1881138151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881138151 is an equidigital number, since it uses as much as digits as its factorization.

1881138151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 37.

The square root of 1881138151 is about 43372.0895392417. The cubic root of 1881138151 is about 1234.4501698866.

The spelling of 1881138151 in words is "one billion, eight hundred eighty-one million, one hundred thirty-eight thousand, one hundred fifty-one".