190823505 has 32 divisors (see below), whose sum is σ = 311351040. Its totient is φ = 99778560.

The previous prime is 190823497. The next prime is 190823513. The reversal of 190823505 is 505328091.

It is an interprime number because it is at equal distance from previous prime (190823497) and next prime (190823513).

It is not a de Polignac number, because 190823505 - 2³ = 190823497 is a prime.

It is a super-2 number, since 2×190823505² = 72827220120970050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247761 + ... + 248529.

It is an arithmetic number, because the mean of its divisors is an integer number (9729720).

Almost surely, 2^190823505 is an apocalyptic number.

190823505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190823505 is a deficient number, since it is larger than the sum of its proper divisors (120527535).

190823505 is a wasteful number, since it uses less digits than its factorization.

190823505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 190823505 is about 13813.8881202940. Note that the first 3 decimals coincide. The cubic root of 190823505 is about 575.7190801981.

The spelling of 190823505 in words is "one hundred ninety million, eight hundred twenty-three thousand, five hundred five".