1373445020 has 48 divisors (see below), whose sum is σ = 3074534400. Its totient is φ = 513864000.

The previous prime is 1373444999. The next prime is 1373445041. The reversal of 1373445020 is 205443731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1373444999) and next prime (1373445041).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7145 + ... + 52895.

It is an arithmetic number, because the mean of its divisors is an integer number (64052800).

Almost surely, 2^1373445020 is an apocalyptic number.

1373445020 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 1373445020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1537267200).

1373445020 is an abundant number, since it is smaller than the sum of its proper divisors (1701089380).

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

1373445020 is a wasteful number, since it uses less digits than its factorization.

1373445020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45858 (or 45856 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 1373445020 is about 37060.0191581170. The cubic root of 1373445020 is about 1111.5707060098.

Adding to 1373445020 its reverse (205443731), we get a palindrome (1578888751).

The spelling of 1373445020 in words is "one billion, three hundred seventy-three million, four hundred forty-five thousand, twenty".