1378100052 has 108 divisors (see below), whose sum is σ = 4052377056. Its totient is φ = 386822880.

The previous prime is 1378100041. The next prime is 1378100089. The reversal of 1378100052 is 2500018731.

It is a junction number, because it is equal to n+sod(n) for n = 1378099989 and 1378100025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 876427 + ... + 877997.

Almost surely, 2^1378100052 is an apocalyptic number.

1378100052 is a gapful number since it is divisible by the number (12) 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 1378100052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026188528).

1378100052 is an abundant number, since it is smaller than the sum of its proper divisors (2674277004).

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

1378100052 is a wasteful number, since it uses less digits than its factorization.

1378100052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1378100052 is about 37122.7699936306. The cubic root of 1378100052 is about 1112.8251094100.

Adding to 1378100052 its reverse (2500018731), we get a palindrome (3878118783).

The spelling of 1378100052 in words is "one billion, three hundred seventy-eight million, one hundred thousand, fifty-two".