153238109 has 4 divisors (see below), whose sum is σ = 154755420. Its totient is φ = 151720800.

The previous prime is 153238103. The next prime is 153238157. The reversal of 153238109 is 901832351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123698884 + 29539225 = 11122^2 + 5435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153238109 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 (153238103) 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 in 3 ways as a sum of consecutive naturals, for example, 758504 + ... + 758705.

It is an arithmetic number, because the mean of its divisors is an integer number (38688855).

Almost surely, 2^153238109 is an apocalyptic number.

It is an amenable number.

153238109 is a deficient number, since it is larger than the sum of its proper divisors (1517311).

153238109 is a wasteful number, since it uses less digits than its factorization.

153238109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517310.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 153238109 is about 12378.9381208567. The cubic root of 153238109 is about 535.1254359853.

It can be divided in two parts, 15323 and 8109, that added together give a palindrome (23432).

The spelling of 153238109 in words is "one hundred fifty-three million, two hundred thirty-eight thousand, one hundred nine".