1238951023 has 2 divisors, whose sum is σ = 1238951024. Its totient is φ = 1238951022.

The previous prime is 1238951011. The next prime is 1238951059. The reversal of 1238951023 is 3201598321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1238951023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1238951023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238951093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619475511 + 619475512.

It is an arithmetic number, because the mean of its divisors is an integer number (619475512).

Almost surely, 2^1238951023 is an apocalyptic number.

1238951023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238951023 is an equidigital number, since it uses as much as digits as its factorization.

1238951023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1238951023 is about 35198.7360994681. The cubic root of 1238951023 is about 1074.0340406639.

The spelling of 1238951023 in words is "one billion, two hundred thirty-eight million, nine hundred fifty-one thousand, twenty-three".