190087985 has 16 divisors (see below), whose sum is σ = 241294464. Its totient is φ = 143459712.

The previous prime is 190087979. The next prime is 190088021. The reversal of 190087985 is 589780091.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 190087985 - 2⁴ = 190087969 is a prime.

It is a super-2 number, since 2×190087985² = 72266884082720450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2927 + ... + 19716.

It is an arithmetic number, because the mean of its divisors is an integer number (15080904).

Almost surely, 2^190087985 is an apocalyptic number.

It is an amenable number.

190087985 is a deficient number, since it is larger than the sum of its proper divisors (51206479).

190087985 is a wasteful number, since it uses less digits than its factorization.

190087985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22744.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 190087985 is about 13787.2399340840. The cubic root of 190087985 is about 574.9784339738.

The spelling of 190087985 in words is "one hundred ninety million, eighty-seven thousand, nine hundred eighty-five".