1258260919 has 2 divisors, whose sum is σ = 1258260920. Its totient is φ = 1258260918.

The previous prime is 1258260917. The next prime is 1258260979. The reversal of 1258260919 is 9190628521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1258260919 - 2¹ = 1258260917 is a prime.

It is a super-2 number, since 2×1258260919² = 3166441080565449122, which contains 22 as substring.

Together with 1258260917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1258260911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629130459 + 629130460.

It is an arithmetic number, because the mean of its divisors is an integer number (629130460).

Almost surely, 2^1258260919 is an apocalyptic number.

1258260919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258260919 is an equidigital number, since it uses as much as digits as its factorization.

1258260919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1258260919 is about 35471.9737116502. The cubic root of 1258260919 is about 1079.5851513115.

The spelling of 1258260919 in words is "one billion, two hundred fifty-eight million, two hundred sixty thousand, nine hundred nineteen".