151109809 has 2 divisors, whose sum is σ = 151109810. Its totient is φ = 151109808.

The previous prime is 151109759. The next prime is 151109843. The reversal of 151109809 is 908901151.

It is an a-pointer prime, because the next prime (151109843) can be obtained adding 151109809 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140351409 + 10758400 = 11847^2 + 3280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151109809 is a prime.

It is not a weakly prime, because it can be changed into another prime (151109909) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75554904 + 75554905.

It is an arithmetic number, because the mean of its divisors is an integer number (75554905).

Almost surely, 2^151109809 is an apocalyptic number.

It is an amenable number.

151109809 is a deficient number, since it is larger than the sum of its proper divisors (1).

151109809 is an equidigital number, since it uses as much as digits as its factorization.

151109809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 151109809 is about 12292.6729802757. The cubic root of 151109809 is about 532.6364527944.

The spelling of 151109809 in words is "one hundred fifty-one million, one hundred nine thousand, eight hundred nine".