1154841887 has 2 divisors, whose sum is σ = 1154841888. Its totient is φ = 1154841886.

The previous prime is 1154841859. The next prime is 1154841889. The reversal of 1154841887 is 7881484511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154841887 is a prime.

Together with 1154841889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154841889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577420943 + 577420944.

It is an arithmetic number, because the mean of its divisors is an integer number (577420944).

Almost surely, 2^1154841887 is an apocalyptic number.

1154841887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154841887 is an equidigital number, since it uses as much as digits as its factorization.

1154841887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 286720, while the sum is 47.

The square root of 1154841887 is about 33982.9646587816. The cubic root of 1154841887 is about 1049.1578695900.

It can be divided in two parts, 11548 and 41887, that added together give a palindrome (53435).

The spelling of 1154841887 in words is "one billion, one hundred fifty-four million, eight hundred forty-one thousand, eight hundred eighty-seven".