19886030415 has 64 divisors (see below), whose sum is σ = 37541905920. Its totient is φ = 9952842240.

The previous prime is 19886030383. The next prime is 19886030441. The reversal of 19886030415 is 51403068891.

It is not a de Polignac number, because 19886030415 - 2⁵ = 19886030383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 783880 + ... + 808850.

It is an arithmetic number, because the mean of its divisors is an integer number (586592280).

Almost surely, 2^19886030415 is an apocalyptic number.

19886030415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19886030415 is a deficient number, since it is larger than the sum of its proper divisors (17655875505).

19886030415 is a wasteful number, since it uses less digits than its factorization.

19886030415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349 (or 25343 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 19886030415 in words is "nineteen billion, eight hundred eighty-six million, thirty thousand, four hundred fifteen".