1358423993 has 2 divisors, whose sum is σ = 1358423994. Its totient is φ = 1358423992.

The previous prime is 1358423971. The next prime is 1358424007. The reversal of 1358423993 is 3993248531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220314489 + 138109504 = 34933^2 + 11752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1358423993 - 2⁶ = 1358423929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1358423293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679211996 + 679211997.

It is an arithmetic number, because the mean of its divisors is an integer number (679211997).

Almost surely, 2^1358423993 is an apocalyptic number.

It is an amenable number.

1358423993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358423993 is an equidigital number, since it uses as much as digits as its factorization.

1358423993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 1358423993 is about 36856.8038901910. The cubic root of 1358423993 is about 1107.5035182743.

The spelling of 1358423993 in words is "one billion, three hundred fifty-eight million, four hundred twenty-three thousand, nine hundred ninety-three".