1685142764 has 24 divisors (see below), whose sum is σ = 3051288576. Its totient is φ = 813474000.

The previous prime is 1685142749. The next prime is 1685142779. The reversal of 1685142764 is 4672415861.

It is an interprime number because it is at equal distance from previous prime (1685142749) and next prime (1685142779).

It is a super-2 number, since 2×1685142764² = 5679412270123119392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37679 + ... + 69209.

It is an arithmetic number, because the mean of its divisors is an integer number (127137024).

Almost surely, 2^1685142764 is an apocalyptic number.

It is an amenable number.

1685142764 is a deficient number, since it is larger than the sum of its proper divisors (1366145812).

1685142764 is a wasteful number, since it uses less digits than its factorization.

1685142764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31997 (or 31995 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 1685142764 is about 41050.4904233798. The cubic root of 1685142764 is about 1189.9961782237.

The spelling of 1685142764 in words is "one billion, six hundred eighty-five million, one hundred forty-two thousand, seven hundred sixty-four".