151881139 has 2 divisors, whose sum is σ = 151881140. Its totient is φ = 151881138.

The previous prime is 151881133. The next prime is 151881143. The reversal of 151881139 is 931188151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151881139 - 2⁷ = 151881011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151881098 and 151881107.

It is not a weakly prime, because it can be changed into another prime (151881133) 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, 75940569 + 75940570.

It is an arithmetic number, because the mean of its divisors is an integer number (75940570).

Almost surely, 2^151881139 is an apocalyptic number.

151881139 is a deficient number, since it is larger than the sum of its proper divisors (1).

151881139 is an equidigital number, since it uses as much as digits as its factorization.

151881139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 37.

The square root of 151881139 is about 12324.0066131109. The cubic root of 151881139 is about 533.5411843069.

The spelling of 151881139 in words is "one hundred fifty-one million, eight hundred eighty-one thousand, one hundred thirty-nine".