20019565190 has 32 divisors (see below), whose sum is σ = 36617464800. Its totient is φ = 7879394304.

The previous prime is 20019565183. The next prime is 20019565201. The reversal of 20019565190 is 9156591002.

It is a super-2 number, since 2×20019565190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108161 + ... + 227459.

It is an arithmetic number, because the mean of its divisors is an integer number (1144295775).

Almost surely, 2^20019565190 is an apocalyptic number.

20019565190 is a deficient number, since it is larger than the sum of its proper divisors (16597899610).

20019565190 is a wasteful number, since it uses less digits than its factorization.

20019565190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119576.

The product of its (nonzero) digits is 24300, while the sum is 38.

The spelling of 20019565190 in words is "twenty billion, nineteen million, five hundred sixty-five thousand, one hundred ninety".