1258640341 has 4 divisors (see below), whose sum is σ = 1438446112. Its totient is φ = 1078834572.

The previous prime is 1258640323. The next prime is 1258640347. The reversal of 1258640341 is 1430468521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1430468521 = 181 ⋅7903141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1258640341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1258640297 and 1258640306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258640347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89902875 + ... + 89902888.

It is an arithmetic number, because the mean of its divisors is an integer number (359611528).

Almost surely, 2^1258640341 is an apocalyptic number.

It is an amenable number.

1258640341 is a deficient number, since it is larger than the sum of its proper divisors (179805771).

1258640341 is an equidigital number, since it uses as much as digits as its factorization.

1258640341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179805770.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1258640341 is about 35477.3215026163. The cubic root of 1258640341 is about 1079.6936548249.

The spelling of 1258640341 in words is "one billion, two hundred fifty-eight million, six hundred forty thousand, three hundred forty-one".