1672819020 has 48 divisors (see below), whose sum is σ = 5204327520. Its totient is φ = 446084928.

The previous prime is 1672818997. The next prime is 1672819021. The reversal of 1672819020 is 209182761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1672819021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1548367 + ... + 1549446.

It is an arithmetic number, because the mean of its divisors is an integer number (108423490).

Almost surely, 2^1672819020 is an apocalyptic number.

1672819020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672819020 is an abundant number, since it is smaller than the sum of its proper divisors (3531508500).

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

1672819020 is a wasteful number, since it uses less digits than its factorization.

1672819020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097831 (or 3097823 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1672819020 is about 40900.1102688000. The cubic root of 1672819020 is about 1187.0881943466.

The spelling of 1672819020 in words is "one billion, six hundred seventy-two million, eight hundred nineteen thousand, twenty".