1268250987 has 16 divisors (see below), whose sum is σ = 1735291008. Its totient is φ = 823468800.

The previous prime is 1268250959. The next prime is 1268251009. The reversal of 1268250987 is 7890528621.

It is not a de Polignac number, because 1268250987 - 2⁶ = 1268250923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268250947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31612 + ... + 59462.

It is an arithmetic number, because the mean of its divisors is an integer number (108455688).

Almost surely, 2^1268250987 is an apocalyptic number.

1268250987 is a deficient number, since it is larger than the sum of its proper divisors (467040021).

1268250987 is a wasteful number, since it uses less digits than its factorization.

1268250987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28250.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 1268250987 is about 35612.5116637398. The cubic root of 1268250987 is about 1082.4347752126.

The spelling of 1268250987 in words is "one billion, two hundred sixty-eight million, two hundred fifty thousand, nine hundred eighty-seven".