153138091 has 4 divisors (see below), whose sum is σ = 162146232. Its totient is φ = 144129952.

The previous prime is 153138053. The next prime is 153138113. The reversal of 153138091 is 190831351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190831351 = 10039 ⋅19009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153138091 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153138191) 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, 4504045 + ... + 4504078.

It is an arithmetic number, because the mean of its divisors is an integer number (40536558).

Almost surely, 2^153138091 is an apocalyptic number.

153138091 is a deficient number, since it is larger than the sum of its proper divisors (9008141).

153138091 is an equidigital number, since it uses as much as digits as its factorization.

153138091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9008140.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 153138091 is about 12374.8976157381. The cubic root of 153138091 is about 535.0089857867.

The spelling of 153138091 in words is "one hundred fifty-three million, one hundred thirty-eight thousand, ninety-one".