1258587961 has 8 divisors (see below), whose sum is σ = 1277769600. Its totient is φ = 1239446880.

The previous prime is 1258587919. The next prime is 1258587971. The reversal of 1258587961 is 1697858521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1258587961 - 2¹³ = 1258579769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1258587899 and 1258587908.

It is not an unprimeable number, because it can be changed into a prime (1258587971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55605 + ... + 74893.

It is an arithmetic number, because the mean of its divisors is an integer number (159721200).

Almost surely, 2^1258587961 is an apocalyptic number.

It is an amenable number.

1258587961 is a deficient number, since it is larger than the sum of its proper divisors (19181639).

1258587961 is an equidigital number, since it uses as much as digits as its factorization.

1258587961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20279.

The product of its digits is 1209600, while the sum is 52.

The square root of 1258587961 is about 35476.5832768602. The cubic root of 1258587961 is about 1079.6786769856.

The spelling of 1258587961 in words is "one billion, two hundred fifty-eight million, five hundred eighty-seven thousand, nine hundred sixty-one".