1098442664 has 32 divisors (see below), whose sum is σ = 2259260640. Its totient is φ = 496526400.

The previous prime is 1098442663. The next prime is 1098442693. The reversal of 1098442664 is 4662448901.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (1098442663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18554 + ... + 50409.

It is an arithmetic number, because the mean of its divisors is an integer number (70601895).

Almost surely, 2^1098442664 is an apocalyptic number.

It is an amenable number.

1098442664 is an abundant number, since it is smaller than the sum of its proper divisors (1160817976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098442664 is a wasteful number, since it uses less digits than its factorization.

1098442664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69161 (or 69157 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 1098442664 is about 33142.7618643951. The cubic root of 1098442664 is about 1031.7927317457.

The spelling of 1098442664 in words is "one billion, ninety-eight million, four hundred forty-two thousand, six hundred sixty-four".