1258923011 has 2 divisors, whose sum is σ = 1258923012. Its totient is φ = 1258923010.

The previous prime is 1258922909. The next prime is 1258923013. The reversal of 1258923011 is 1103298521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1258923011 - 2¹⁸ = 1258660867 is a prime.

It is a super-2 number, since 2×1258923011² = 3169774295250612242, which contains 22 as substring.

Together with 1258923013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1258923013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629461505 + 629461506.

It is an arithmetic number, because the mean of its divisors is an integer number (629461506).

Almost surely, 2^1258923011 is an apocalyptic number.

1258923011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258923011 is an equidigital number, since it uses as much as digits as its factorization.

1258923011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1258923011 is about 35481.3050915549. The cubic root of 1258923011 is about 1079.7744759435.

The spelling of 1258923011 in words is "one billion, two hundred fifty-eight million, nine hundred twenty-three thousand, eleven".