1684949964 has 24 divisors (see below), whose sum is σ = 3932813808. Its totient is φ = 561469440.

The previous prime is 1684949957. The next prime is 1684949983. The reversal of 1684949964 is 4699494861.

1684949964 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1684949898 and 1684949907.

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, 19444 + ... + 61220.

It is an arithmetic number, because the mean of its divisors is an integer number (163867242).

Almost surely, 2^1684949964 is an apocalyptic number.

It is an amenable number.

1684949964 is an abundant number, since it is smaller than the sum of its proper divisors (2247863844).

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

1684949964 is a wasteful number, since it uses less digits than its factorization.

1684949964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45145 (or 45143 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The square root of 1684949964 is about 41048.1420285986. The cubic root of 1684949964 is about 1189.9507933423.

The spelling of 1684949964 in words is "one billion, six hundred eighty-four million, nine hundred forty-nine thousand, nine hundred sixty-four".