190808623 has 2 divisors, whose sum is σ = 190808624. Its totient is φ = 190808622.

The previous prime is 190808609. The next prime is 190808669. The reversal of 190808623 is 326808091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190808623 - 2¹³ = 190800431 is a prime.

It is a super-2 number, since 2×190808623² = 72815861222312258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190803623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95404311 + 95404312.

It is an arithmetic number, because the mean of its divisors is an integer number (95404312).

Almost surely, 2^190808623 is an apocalyptic number.

190808623 is a deficient number, since it is larger than the sum of its proper divisors (1).

190808623 is an equidigital number, since it uses as much as digits as its factorization.

190808623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 190808623 is about 13813.3494489932. The cubic root of 190808623 is about 575.7041133590.

The spelling of 190808623 in words is "one hundred ninety million, eight hundred eight thousand, six hundred twenty-three".