1685450152 has 8 divisors (see below), whose sum is σ = 3160219050. Its totient is φ = 842725072.

The previous prime is 1685450149. The next prime is 1685450153. The reversal of 1685450152 is 2510545861.

It can be written as a sum of positive squares in only one way, i.e., 1679852196 + 5597956 = 40986^2 + 2366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1685450153) 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 as a sum of consecutive naturals, namely, 105340627 + ... + 105340642.

Almost surely, 2^1685450152 is an apocalyptic number.

It is an amenable number.

1685450152 is a deficient number, since it is larger than the sum of its proper divisors (1474768898).

1685450152 is a wasteful number, since it uses less digits than its factorization.

1685450152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210681275 (or 210681271 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 1685450152 is about 41054.2342761377. The cubic root of 1685450152 is about 1190.0685298199.

The spelling of 1685450152 in words is "one billion, six hundred eighty-five million, four hundred fifty thousand, one hundred fifty-two".