152789993 has 2 divisors, whose sum is σ = 152789994. Its totient is φ = 152789992.

The previous prime is 152789981. The next prime is 152790007. The reversal of 152789993 is 399987251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152571904 + 218089 = 12352^2 + 467^2 .

It is an emirp because it is prime and its reverse (399987251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 152789993 - 2⁴ = 152789977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (152789293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76394996 + 76394997.

It is an arithmetic number, because the mean of its divisors is an integer number (76394997).

Almost surely, 2^152789993 is an apocalyptic number.

It is an amenable number.

152789993 is a deficient number, since it is larger than the sum of its proper divisors (1).

152789993 is an equidigital number, since it uses as much as digits as its factorization.

152789993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 53.

The square root of 152789993 is about 12360.8249320181. The cubic root of 152789993 is about 534.6033021631.

The spelling of 152789993 in words is "one hundred fifty-two million, seven hundred eighty-nine thousand, nine hundred ninety-three".