1268012554 has 4 divisors (see below), whose sum is σ = 1902018834. Its totient is φ = 634006276.

The previous prime is 1268012539. The next prime is 1268012569. The reversal of 1268012554 is 4552108621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1268012539) and next prime (1268012569).

It can be written as a sum of positive squares in only one way, i.e., 1251390625 + 16621929 = 35375^2 + 4077^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 317003137 + ... + 317003140.

Almost surely, 2^1268012554 is an apocalyptic number.

1268012554 is a deficient number, since it is larger than the sum of its proper divisors (634006280).

1268012554 is an equidigital number, since it uses as much as digits as its factorization.

1268012554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634006279.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 1268012554 is about 35609.1639048153. The cubic root of 1268012554 is about 1082.3669378658.

The spelling of 1268012554 in words is "one billion, two hundred sixty-eight million, twelve thousand, five hundred fifty-four".