1098779610 has 16 divisors (see below), whose sum is σ = 2637071136. Its totient is φ = 293007888.

The previous prime is 1098779573. The next prime is 1098779611. The reversal of 1098779610 is 169778901.

It is a happy number.

1098779610 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1098779610.

It is not an unprimeable number, because it can be changed into a prime (1098779611) 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, 18312964 + ... + 18313023.

It is an arithmetic number, because the mean of its divisors is an integer number (164816946).

Almost surely, 2^1098779610 is an apocalyptic number.

1098779610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1098779610 is an abundant number, since it is smaller than the sum of its proper divisors (1538291526).

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

1098779610 is a wasteful number, since it uses less digits than its factorization.

1098779610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36625997.

The product of its (nonzero) digits is 190512, while the sum is 48.

The square root of 1098779610 is about 33147.8447263167. The cubic root of 1098779610 is about 1031.8982213640.

The spelling of 1098779610 in words is "one billion, ninety-eight million, seven hundred seventy-nine thousand, six hundred ten".