1685052461 has 16 divisors (see below), whose sum is σ = 1855249920. Its totient is φ = 1523504640.

The previous prime is 1685052451. The next prime is 1685052469. The reversal of 1685052461 is 1642505861.

It is a happy number.

It is not a de Polignac number, because 1685052461 - 2¹⁴ = 1685036077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685052469) 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, 60530 + ... + 83868.

It is an arithmetic number, because the mean of its divisors is an integer number (115953120).

Almost surely, 2^1685052461 is an apocalyptic number.

It is an amenable number.

1685052461 is a deficient number, since it is larger than the sum of its proper divisors (170197459).

1685052461 is a wasteful number, since it uses less digits than its factorization.

1685052461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23524.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1685052461 is about 41049.3905070465. The cubic root of 1685052461 is about 1189.9749214403.

Subtracting from 1685052461 its product of nonzero digits (57600), we obtain a palindrome (1684994861).

The spelling of 1685052461 in words is "one billion, six hundred eighty-five million, fifty-two thousand, four hundred sixty-one".