1673509220 has 12 divisors (see below), whose sum is σ = 3514369404. Its totient is φ = 669403680.

The previous prime is 1673509193. The next prime is 1673509241. The reversal of 1673509220 is 229053761.

1673509220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 283114276 + 1390394944 = 16826^2 + 37288^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41837711 + ... + 41837750.

It is an arithmetic number, because the mean of its divisors is an integer number (292864117).

Almost surely, 2^1673509220 is an apocalyptic number.

1673509220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1673509220 is an abundant number, since it is smaller than the sum of its proper divisors (1840860184).

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

1673509220 is a wasteful number, since it uses less digits than its factorization.

1673509220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83675470 (or 83675468 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1673509220 is about 40908.5470287078. The cubic root of 1673509220 is about 1187.2514348812.

The spelling of 1673509220 in words is "one billion, six hundred seventy-three million, five hundred nine thousand, two hundred twenty".