147157823 has 2 divisors, whose sum is σ = 147157824. Its totient is φ = 147157822.

The previous prime is 147157819. The next prime is 147157883. The reversal of 147157823 is 328751741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147157823 - 2² = 147157819 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147157883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73578911 + 73578912.

It is an arithmetic number, because the mean of its divisors is an integer number (73578912).

Almost surely, 2^147157823 is an apocalyptic number.

147157823 is a deficient number, since it is larger than the sum of its proper divisors (1).

147157823 is an equidigital number, since it uses as much as digits as its factorization.

147157823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 147157823 is about 12130.8624178168. The cubic root of 147157823 is about 527.9520146455.

The spelling of 147157823 in words is "one hundred forty-seven million, one hundred fifty-seven thousand, eight hundred twenty-three".