1098058640 has 240 divisors, whose sum is σ = 3267112320. Its totient is φ = 340623360.

The previous prime is 1098058631. The next prime is 1098058651. The reversal of 1098058640 is 468508901.

1098058640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1712720 + ... + 1713360.

It is an arithmetic number, because the mean of its divisors is an integer number (13612968).

Almost surely, 2^1098058640 is an apocalyptic number.

1098058640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098058640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1633556160).

1098058640 is an abundant number, since it is smaller than the sum of its proper divisors (2169053680).

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

1098058640 is a wasteful number, since it uses less digits than its factorization.

1098058640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 1098058640 is about 33136.9678757728. The cubic root of 1098058640 is about 1031.6724768402.

The spelling of 1098058640 in words is "one billion, ninety-eight million, fifty-eight thousand, six hundred forty".