151872109 has 2 divisors, whose sum is σ = 151872110. Its totient is φ = 151872108.

The previous prime is 151872089. The next prime is 151872157. The reversal of 151872109 is 901278151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139948900 + 11923209 = 11830^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 151872109 - 2⁷ = 151871981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151872179) 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, 75936054 + 75936055.

It is an arithmetic number, because the mean of its divisors is an integer number (75936055).

Almost surely, 2^151872109 is an apocalyptic number.

It is an amenable number.

151872109 is a deficient number, since it is larger than the sum of its proper divisors (1).

151872109 is an equidigital number, since it uses as much as digits as its factorization.

151872109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 151872109 is about 12323.6402495367. The cubic root of 151872109 is about 533.5306103093.

The spelling of 151872109 in words is "one hundred fifty-one million, eight hundred seventy-two thousand, one hundred nine".