100190019091 has 2 divisors, whose sum is σ = 100190019092. Its totient is φ = 100190019090.

The previous prime is 100190019067. The next prime is 100190019113. The reversal of 100190019091 is 190910091001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100190019091 - 2¹¹ = 100190017043 is a prime.

It is not a weakly prime, because it can be changed into another prime (100190019691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50095009545 + 50095009546.

It is an arithmetic number, because the mean of its divisors is an integer number (50095009546).

Almost surely, 2^100190019091 is an apocalyptic number.

100190019091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100190019091 is an equidigital number, since it uses as much as digits as its factorization.

100190019091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 100190019091 in words is "one hundred billion, one hundred ninety million, nineteen thousand, ninety-one".