190801857 has 12 divisors (see below), whose sum is σ = 268498320. Its totient is φ = 120505752.

The previous prime is 190801847. The next prime is 190801889. The reversal of 190801857 is 758108091.

It is not a de Polignac number, because 190801857 - 2⁸ = 190801601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190801847) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 87007 + ... + 89172.

It is an arithmetic number, because the mean of its divisors is an integer number (22374860).

Almost surely, 2^190801857 is an apocalyptic number.

It is an amenable number.

190801857 is a deficient number, since it is larger than the sum of its proper divisors (77696463).

190801857 is a wasteful number, since it uses less digits than its factorization.

190801857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176220 (or 176201 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 190801857 is about 13813.1045388066. The cubic root of 190801857 is about 575.6973085302.

The spelling of 190801857 in words is "one hundred ninety million, eight hundred one thousand, eight hundred fifty-seven".