151538309 has 8 divisors (see below), whose sum is σ = 163578072. Its totient is φ = 139553280.

The previous prime is 151538287. The next prime is 151538333. The reversal of 151538309 is 903835151.

It can be written as a sum of positive squares in 4 ways, for example, as 16630084 + 134908225 = 4078^2 + 11615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151538309 - 2²⁰ = 150489733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151538909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7832 + ... + 19089.

It is an arithmetic number, because the mean of its divisors is an integer number (20447259).

Almost surely, 2^151538309 is an apocalyptic number.

It is an amenable number.

151538309 is a deficient number, since it is larger than the sum of its proper divisors (12039763).

151538309 is a wasteful number, since it uses less digits than its factorization.

151538309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 151538309 is about 12310.0897234748. The cubic root of 151538309 is about 533.1394409342.

The spelling of 151538309 in words is "one hundred fifty-one million, five hundred thirty-eight thousand, three hundred nine".