19415025140 has 24 divisors (see below), whose sum is σ = 46596060672. Its totient is φ = 6656580000.

The previous prime is 19415025109. The next prime is 19415025181. The reversal of 19415025140 is 4152051491.

It is a junction number, because it is equal to n+sod(n) for n = 19415025097 and 19415025106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69339236 + ... + 69339515.

It is an arithmetic number, because the mean of its divisors is an integer number (1941502528).

Almost surely, 2^19415025140 is an apocalyptic number.

19415025140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19415025140 is an abundant number, since it is smaller than the sum of its proper divisors (27181035532).

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

19415025140 is a wasteful number, since it uses less digits than its factorization.

19415025140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138678767 (or 138678765 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 19415025140 in words is "nineteen billion, four hundred fifteen million, twenty-five thousand, one hundred forty".