1098915667 has 4 divisors (see below), whose sum is σ = 1100274840. Its totient is φ = 1097556496.

The previous prime is 1098915659. The next prime is 1098915731. The reversal of 1098915667 is 7665198901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1098915667 - 2³ = 1098915659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098915607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678373 + ... + 679990.

It is an arithmetic number, because the mean of its divisors is an integer number (275068710).

Almost surely, 2^1098915667 is an apocalyptic number.

1098915667 is a deficient number, since it is larger than the sum of its proper divisors (1359173).

1098915667 is an equidigital number, since it uses as much as digits as its factorization.

1098915667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359172.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 1098915667 is about 33149.8969379997. The cubic root of 1098915667 is about 1031.9408113977.

The spelling of 1098915667 in words is "one billion, ninety-eight million, nine hundred fifteen thousand, six hundred sixty-seven".