90873019 has 2 divisors, whose sum is σ = 90873020. Its totient is φ = 90873018.

The previous prime is 90873017. The next prime is 90873031. The reversal of 90873019 is 91037809.

It is a weak prime.

It is an emirp because it is prime and its reverse (91037809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90873019 - 2¹ = 90873017 is a prime.

It is a super-2 number, since 2×90873019² = 16515811164348722, which contains 22 as substring.

Together with 90873017, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90873017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45436509 + 45436510.

It is an arithmetic number, because the mean of its divisors is an integer number (45436510).

Almost surely, 2^90873019 is an apocalyptic number.

90873019 is a deficient number, since it is larger than the sum of its proper divisors (1).

90873019 is an equidigital number, since it uses as much as digits as its factorization.

90873019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 90873019 is about 9532.7340779023. The cubic root of 90873019 is about 449.5848335494.

The spelling of 90873019 in words is "ninety million, eight hundred seventy-three thousand, nineteen".