19830561026 has 16 divisors (see below), whose sum is σ = 30109955904. Its totient is φ = 9793954704.

The previous prime is 19830561017. The next prime is 19830561029. The reversal of 19830561026 is 62016503891.

It is not an unprimeable number, because it can be changed into a prime (19830561029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360091 + ... + 1374593.

It is an arithmetic number, because the mean of its divisors is an integer number (1881872244).

Almost surely, 2^19830561026 is an apocalyptic number.

19830561026 is a deficient number, since it is larger than the sum of its proper divisors (10279394878).

19830561026 is a wasteful number, since it uses less digits than its factorization.

19830561026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22825.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 19830561026 in words is "nineteen billion, eight hundred thirty million, five hundred sixty-one thousand, twenty-six".