19268786101 has 2 divisors, whose sum is σ = 19268786102. Its totient is φ = 19268786100.

The previous prime is 19268786093. The next prime is 19268786143. The reversal of 19268786101 is 10168786291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19112786001 + 156000100 = 138249^2 + 12490^2 .

It is a cyclic number.

It is not a de Polignac number, because 19268786101 - 2³ = 19268786093 is a prime.

It is a super-2 number, since 2×19268786101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19268786401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9634393050 + 9634393051.

It is an arithmetic number, because the mean of its divisors is an integer number (9634393051).

Almost surely, 2^19268786101 is an apocalyptic number.

It is an amenable number.

19268786101 is a deficient number, since it is larger than the sum of its proper divisors (1).

19268786101 is an equidigital number, since it uses as much as digits as its factorization.

19268786101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 49.

The spelling of 19268786101 in words is "nineteen billion, two hundred sixty-eight million, seven hundred eighty-six thousand, one hundred one".