1098967655 has 4 divisors (see below), whose sum is σ = 1318761192. Its totient is φ = 879174120.

The previous prime is 1098967651. The next prime is 1098967687. The reversal of 1098967655 is 5567698901.

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

It is not a de Polignac number, because 1098967655 - 2² = 1098967651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098967655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098967651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109896761 + ... + 109896770.

It is an arithmetic number, because the mean of its divisors is an integer number (329690298).

Almost surely, 2^1098967655 is an apocalyptic number.

1098967655 is a deficient number, since it is larger than the sum of its proper divisors (219793537).

1098967655 is an equidigital number, since it uses as much as digits as its factorization.

1098967655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219793536.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 1098967655 is about 33150.6810638937. The cubic root of 1098967655 is about 1031.9570843155.

The spelling of 1098967655 in words is "one billion, ninety-eight million, nine hundred sixty-seven thousand, six hundred fifty-five".