15438709098 has 48 divisors (see below), whose sum is σ = 33976575360. Its totient is φ = 5065429248.

The previous prime is 15438709087. The next prime is 15438709127. The reversal of 15438709098 is 89090783451.

15438709098 is a `hidden beast` number, since 1 + 543 + 8 + 7 + 0 + 9 + 0 + 98 = 666.

It is a super-2 number, since 2×15438709098² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789018 + ... + 1797626.

It is an arithmetic number, because the mean of its divisors is an integer number (707845320).

Almost surely, 2^15438709098 is an apocalyptic number.

15438709098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

15438709098 is an abundant number, since it is smaller than the sum of its proper divisors (18537866262).

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

15438709098 is a wasteful number, since it uses less digits than its factorization.

15438709098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171 (or 10168 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 15438709098 in words is "fifteen billion, four hundred thirty-eight million, seven hundred nine thousand, ninety-eight".