1681292228 has 48 divisors (see below), whose sum is σ = 3672805248. Its totient is φ = 654240000.

The previous prime is 1681292213. The next prime is 1681292243. The reversal of 1681292228 is 8222921861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1681292213) and next prime (1681292243).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286928 + ... + 292728.

It is an arithmetic number, because the mean of its divisors is an integer number (76516776).

Almost surely, 2^1681292228 is an apocalyptic number.

It is an amenable number.

1681292228 is an abundant number, since it is smaller than the sum of its proper divisors (1991513020).

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

1681292228 is a wasteful number, since it uses less digits than its factorization.

1681292228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764 (or 6762 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 1681292228 is about 41003.5636012286. The cubic root of 1681292228 is about 1189.0891101509.

The spelling of 1681292228 in words is "one billion, six hundred eighty-one million, two hundred ninety-two thousand, two hundred twenty-eight".