1150278887 has 2 divisors, whose sum is σ = 1150278888. Its totient is φ = 1150278886.

The previous prime is 1150278859. The next prime is 1150278907. The reversal of 1150278887 is 7888720511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1150278887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150278817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575139443 + 575139444.

It is an arithmetic number, because the mean of its divisors is an integer number (575139444).

Almost surely, 2^1150278887 is an apocalyptic number.

1150278887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150278887 is an equidigital number, since it uses as much as digits as its factorization.

1150278887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250880, while the sum is 47.

The square root of 1150278887 is about 33915.7616308406. The cubic root of 1150278887 is about 1047.7742382094.

The spelling of 1150278887 in words is "one billion, one hundred fifty million, two hundred seventy-eight thousand, eight hundred eighty-seven".