1377500128 has 48 divisors (see below), whose sum is σ = 2804336640. Its totient is φ = 665366400.

The previous prime is 1377500119. The next prime is 1377500149. The reversal of 1377500128 is 8210057731.

It is a junction number, because it is equal to n+sod(n) for n = 1377500093 and 1377500102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910893 + ... + 912403.

It is an arithmetic number, because the mean of its divisors is an integer number (58423680).

Almost surely, 2^1377500128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1377500128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402168320).

1377500128 is an abundant number, since it is smaller than the sum of its proper divisors (1426836512).

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

1377500128 is a wasteful number, since it uses less digits than its factorization.

1377500128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 1377500128 is about 37114.6888441760. The cubic root of 1377500128 is about 1112.6636050767.

Adding to 1377500128 its reverse (8210057731), we get a palindrome (9587557859).

The spelling of 1377500128 in words is "one billion, three hundred seventy-seven million, five hundred thousand, one hundred twenty-eight".