1011100019 has 2 divisors, whose sum is σ = 1011100020. Its totient is φ = 1011100018.

The previous prime is 1011100009. The next prime is 1011100043. The reversal of 1011100019 is 9100011101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011100019 - 2⁴ = 1011100003 is a prime.

It is a super-2 number, since 2×1011100019² = 2044646496843600722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011099976 and 1011100012.

It is not a weakly prime, because it can be changed into another prime (1011100009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505550009 + 505550010.

It is an arithmetic number, because the mean of its divisors is an integer number (505550010).

Almost surely, 2^1011100019 is an apocalyptic number.

1011100019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011100019 is an equidigital number, since it uses as much as digits as its factorization.

1011100019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 1011100019 is about 31797.7989647082. The cubic root of 1011100019 is about 1003.6864000889.

The spelling of 1011100019 in words is "one billion, eleven million, one hundred thousand, nineteen".