1098980380 has 36 divisors (see below), whose sum is σ = 2384749080. Its totient is φ = 425404320.

The previous prime is 1098980357. The next prime is 1098980383. The reversal of 1098980380 is 830898901.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1098980380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098980383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9370 + ... + 47809.

It is an arithmetic number, because the mean of its divisors is an integer number (66243030).

Almost surely, 2^1098980380 is an apocalyptic number.

1098980380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098980380 is an abundant number, since it is smaller than the sum of its proper divisors (1285768700).

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

1098980380 is a wasteful number, since it uses less digits than its factorization.

1098980380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57250 (or 57217 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 1098980380 is about 33150.8729900134. The cubic root of 1098980380 is about 1031.9610673272.

The spelling of 1098980380 in words is "one billion, ninety-eight million, nine hundred eighty thousand, three hundred eighty".