19102139136 has 216 divisors, whose sum is σ = 58435016640. Its totient is φ = 5984409600.

The previous prime is 19102139113. The next prime is 19102139143. The reversal of 19102139136 is 63193120191.

It is a super-2 number, since 2×19102139136² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19102139136.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5732991 + ... + 5736321.

Almost surely, 2^19102139136 is an apocalyptic number.

19102139136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19102139136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29217508320).

19102139136 is an abundant number, since it is smaller than the sum of its proper divisors (39332877504).

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

19102139136 is a wasteful number, since it uses less digits than its factorization.

19102139136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The spelling of 19102139136 in words is "nineteen billion, one hundred two million, one hundred thirty-nine thousand, one hundred thirty-six".