1684451148 has 12 divisors (see below), whose sum is σ = 3930386040. Its totient is φ = 561483712.

The previous prime is 1684451143. The next prime is 1684451183. The reversal of 1684451148 is 8411544861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1684451143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70185453 + ... + 70185476.

It is an arithmetic number, because the mean of its divisors is an integer number (327532170).

Almost surely, 2^1684451148 is an apocalyptic number.

It is an amenable number.

1684451148 is an abundant number, since it is smaller than the sum of its proper divisors (2245934892).

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

1684451148 is a wasteful number, since it uses less digits than its factorization.

1684451148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140370936 (or 140370934 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 1684451148 is about 41042.0655912930. The cubic root of 1684451148 is about 1189.8333566051.

The spelling of 1684451148 in words is "one billion, six hundred eighty-four million, four hundred fifty-one thousand, one hundred forty-eight".