19406539098 has 24 divisors (see below), whose sum is σ = 42142434048. Its totient is φ = 6454241352.

The previous prime is 19406539093. The next prime is 19406539099. The reversal of 19406539098 is 89093560491.

19406539098 is a `hidden beast` number, since 19 + 4 + 0 + 6 + 539 + 0 + 98 = 666.

It is a super-2 number, since 2×19406539098² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19406539093) 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, 1208890 + ... + 1224837.

It is an arithmetic number, because the mean of its divisors is an integer number (1755934752).

Almost surely, 2^19406539098 is an apocalyptic number.

19406539098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19406539098 is an abundant number, since it is smaller than the sum of its proper divisors (22735894950).

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

19406539098 is a wasteful number, since it uses less digits than its factorization.

19406539098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434178 (or 2434175 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 19406539098 in words is "nineteen billion, four hundred six million, five hundred thirty-nine thousand, ninety-eight".