1685249193 has 16 divisors (see below), whose sum is σ = 2274244416. Its totient is φ = 1109955840.

The previous prime is 1685249183. The next prime is 1685249227. The reversal of 1685249193 is 3919425861.

It is not a de Polignac number, because 1685249193 - 2⁶ = 1685249129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1685249143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77005 + ... + 96437.

It is an arithmetic number, because the mean of its divisors is an integer number (142140276).

Almost surely, 2^1685249193 is an apocalyptic number.

It is an amenable number.

1685249193 is a deficient number, since it is larger than the sum of its proper divisors (588995223).

1685249193 is a wasteful number, since it uses less digits than its factorization.

1685249193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19784.

The product of its digits is 466560, while the sum is 48.

The square root of 1685249193 is about 41051.7867211648. The cubic root of 1685249193 is about 1190.0212299958.

The spelling of 1685249193 in words is "one billion, six hundred eighty-five million, two hundred forty-nine thousand, one hundred ninety-three".