1685234468 has 6 divisors (see below), whose sum is σ = 2949160326. Its totient is φ = 842617232.

The previous prime is 1685234461. The next prime is 1685234479. The reversal of 1685234468 is 8644325861.

It can be written as a sum of positive squares in only one way, i.e., 1677066304 + 8168164 = 40952^2 + 2858^2 .

It is not an unprimeable number, because it can be changed into a prime (1685234461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210654305 + ... + 210654312.

It is an arithmetic number, because the mean of its divisors is an integer number (491526721).

Almost surely, 2^1685234468 is an apocalyptic number.

It is an amenable number.

1685234468 is a deficient number, since it is larger than the sum of its proper divisors (1263925858).

1685234468 is a wasteful number, since it uses less digits than its factorization.

1685234468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421308621 (or 421308619 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The square root of 1685234468 is about 41051.6073741334. The cubic root of 1685234468 is about 1190.0177640170.

The spelling of 1685234468 in words is "one billion, six hundred eighty-five million, two hundred thirty-four thousand, four hundred sixty-eight".