153138823 has 2 divisors, whose sum is σ = 153138824. Its totient is φ = 153138822.

The previous prime is 153138793. The next prime is 153138827. The reversal of 153138823 is 328831351.

It is a strong prime.

It is an emirp because it is prime and its reverse (328831351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153138823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153138827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76569411 + 76569412.

It is an arithmetic number, because the mean of its divisors is an integer number (76569412).

Almost surely, 2^153138823 is an apocalyptic number.

153138823 is a deficient number, since it is larger than the sum of its proper divisors (1).

153138823 is an equidigital number, since it uses as much as digits as its factorization.

153138823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 153138823 is about 12374.9271917050. The cubic root of 153138823 is about 535.0098382329.

The spelling of 153138823 in words is "one hundred fifty-three million, one hundred thirty-eight thousand, eight hundred twenty-three".