1115474387 has 2 divisors, whose sum is σ = 1115474388. Its totient is φ = 1115474386.

The previous prime is 1115474351. The next prime is 1115474419. The reversal of 1115474387 is 7834745111.

It is a strong prime.

It is an emirp because it is prime and its reverse (7834745111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115474387 - 2¹⁸ = 1115212243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115474317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557737193 + 557737194.

It is an arithmetic number, because the mean of its divisors is an integer number (557737194).

Almost surely, 2^1115474387 is an apocalyptic number.

1115474387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115474387 is an equidigital number, since it uses as much as digits as its factorization.

1115474387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 41.

The square root of 1115474387 is about 33398.7183436730. The cubic root of 1115474387 is about 1037.0981690991.

The spelling of 1115474387 in words is "one billion, one hundred fifteen million, four hundred seventy-four thousand, three hundred eighty-seven".