1268127858 has 16 divisors (see below), whose sum is σ = 2554503840. Its totient is φ = 419667936.

The previous prime is 1268127857. The next prime is 1268127859. The reversal of 1268127858 is 8587218621.

It is an interprime number because it is at equal distance from previous prime (1268127857) and next prime (1268127859).

It is not an unprimeable number, because it can be changed into a prime (1268127857) 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, 759435 + ... + 761102.

It is an arithmetic number, because the mean of its divisors is an integer number (159656490).

Almost surely, 2^1268127858 is an apocalyptic number.

1268127858 is an abundant number, since it is smaller than the sum of its proper divisors (1286375982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1268127858 is a wasteful number, since it uses less digits than its factorization.

1268127858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520681.

The product of its digits is 430080, while the sum is 48.

The square root of 1268127858 is about 35610.7828894564. The cubic root of 1268127858 is about 1082.3997444429.

The spelling of 1268127858 in words is "one billion, two hundred sixty-eight million, one hundred twenty-seven thousand, eight hundred fifty-eight".