1257968343 has 8 divisors (see below), whose sum is σ = 1682126208. Its totient is φ = 836228024.

The previous prime is 1257968333. The next prime is 1257968377. The reversal of 1257968343 is 3438697521.

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 1257968343 - 2¹² = 1257964247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1257968292 and 1257968301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257968333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603171 + ... + 605252.

It is an arithmetic number, because the mean of its divisors is an integer number (210265776).

Almost surely, 2^1257968343 is an apocalyptic number.

1257968343 is a deficient number, since it is larger than the sum of its proper divisors (424157865).

1257968343 is a wasteful number, since it uses less digits than its factorization.

1257968343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208773.

The product of its digits is 1088640, while the sum is 48.

The square root of 1257968343 is about 35467.8494273335. The cubic root of 1257968343 is about 1079.5014682997.

The spelling of 1257968343 in words is "one billion, two hundred fifty-seven million, nine hundred sixty-eight thousand, three hundred forty-three".