1685047512 has 32 divisors (see below), whose sum is σ = 4230259200. Its totient is φ = 559330464.

The previous prime is 1685047489. The next prime is 1685047519. The reversal of 1685047512 is 2157405861.

1685047512 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685047519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141148 + ... + 152619.

It is an arithmetic number, because the mean of its divisors is an integer number (132195600).

Almost surely, 2^1685047512 is an apocalyptic number.

1685047512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1685047512 is an abundant number, since it is smaller than the sum of its proper divisors (2545211688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685047512 is a wasteful number, since it uses less digits than its factorization.

1685047512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294015 (or 294011 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 1685047512 is about 41049.3302259611. The cubic root of 1685047512 is about 1189.9737564535.

The spelling of 1685047512 in words is "one billion, six hundred eighty-five million, forty-seven thousand, five hundred twelve".