190001023 has 2 divisors, whose sum is σ = 190001024. Its totient is φ = 190001022.

The previous prime is 190000991. The next prime is 190001029. The reversal of 190001023 is 320100091.

It is a strong prime.

It is an emirp because it is prime and its reverse (320100091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190001023 - 2⁵ = 190000991 is a prime.

It is a super-2 number, since 2×190001023² = 72200777482093058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190000988 and 190001006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190001029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95000511 + 95000512.

It is an arithmetic number, because the mean of its divisors is an integer number (95000512).

Almost surely, 2^190001023 is an apocalyptic number.

190001023 is a deficient number, since it is larger than the sum of its proper divisors (1).

190001023 is an equidigital number, since it uses as much as digits as its factorization.

190001023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 190001023 is about 13784.0858601505. The cubic root of 190001023 is about 574.8907396684.

The spelling of 190001023 in words is "one hundred ninety million, one thousand, twenty-three".