1673533980 has 96 divisors (see below), whose sum is σ = 5269420800. Its totient is φ = 440887104.

The previous prime is 1673533969. The next prime is 1673533999. The reversal of 1673533980 is 893353761.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26151 + ... + 63489.

It is an arithmetic number, because the mean of its divisors is an integer number (54889800).

Almost surely, 2^1673533980 is an apocalyptic number.

1673533980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673533980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2634710400).

1673533980 is an abundant number, since it is smaller than the sum of its proper divisors (3595886820).

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

1673533980 is a wasteful number, since it uses less digits than its factorization.

1673533980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37440 (or 37432 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 1673533980 is about 40908.8496538341. The cubic root of 1673533980 is about 1187.2572900826.

The spelling of 1673533980 in words is "one billion, six hundred seventy-three million, five hundred thirty-three thousand, nine hundred eighty".