1098566040 has 128 divisors (see below), whose sum is σ = 3871929600. Its totient is φ = 245829120.

The previous prime is 1098566011. The next prime is 1098566041. The reversal of 1098566040 is 406658901.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1098566040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098566041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14850 + ... + 49169.

It is an arithmetic number, because the mean of its divisors is an integer number (30249450).

Almost surely, 2^1098566040 is an apocalyptic number.

1098566040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098566040 is an abundant number, since it is smaller than the sum of its proper divisors (2773363560).

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

1098566040 is a wasteful number, since it uses less digits than its factorization.

1098566040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64057 (or 64053 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1098566040 is about 33144.6230933465. The cubic root of 1098566040 is about 1031.8313602813.

The spelling of 1098566040 in words is "one billion, ninety-eight million, five hundred sixty-six thousand, forty".