1098739188 has 24 divisors (see below), whose sum is σ = 2848583360. Its totient is φ = 366246360.

The previous prime is 1098739183. The next prime is 1098739219. The reversal of 1098739188 is 8819378901.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098739183) 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, 5086648 + ... + 5086863.

Almost surely, 2^1098739188 is an apocalyptic number.

1098739188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1098739188 is an abundant number, since it is smaller than the sum of its proper divisors (1749844172).

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

1098739188 is a wasteful number, since it uses less digits than its factorization.

1098739188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10173524 (or 10173516 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The square root of 1098739188 is about 33147.2349978094. The cubic root of 1098739188 is about 1031.8855673549.

The spelling of 1098739188 in words is "one billion, ninety-eight million, seven hundred thirty-nine thousand, one hundred eighty-eight".