91019873003 has 2 divisors, whose sum is σ = 91019873004. Its totient is φ = 91019873002.

The previous prime is 91019872991. The next prime is 91019873039. The reversal of 91019873003 is 30037891019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91019873003 - 2⁴ = 91019872987 is a prime.

It is not a weakly prime, because it can be changed into another prime (91019873603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45509936501 + 45509936502.

It is an arithmetic number, because the mean of its divisors is an integer number (45509936502).

Almost surely, 2^91019873003 is an apocalyptic number.

91019873003 is a deficient number, since it is larger than the sum of its proper divisors (1).

91019873003 is an equidigital number, since it uses as much as digits as its factorization.

91019873003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 91019873003 in words is "ninety-one billion, nineteen million, eight hundred seventy-three thousand, three".