268951387 has 2 divisors, whose sum is σ = 268951388. Its totient is φ = 268951386.

The previous prime is 268951363. The next prime is 268951391. The reversal of 268951387 is 783159862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268951387 - 2¹¹ = 268949339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268951387.

It is not a weakly prime, because it can be changed into another prime (268901387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134475693 + 134475694.

It is an arithmetic number, because the mean of its divisors is an integer number (134475694).

Almost surely, 2^268951387 is an apocalyptic number.

268951387 is a deficient number, since it is larger than the sum of its proper divisors (1).

268951387 is an equidigital number, since it uses as much as digits as its factorization.

268951387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 268951387 is about 16399.7374064343. The cubic root of 268951387 is about 645.4925924787.

It can be divided in two parts, 2689513 and 87, that added together give a square (2689600 = 1640²).

The spelling of 268951387 in words is "two hundred sixty-eight million, nine hundred fifty-one thousand, three hundred eighty-seven".