1377819128 has 64 divisors (see below), whose sum is σ = 3138600960. Its totient is φ = 553545216.

The previous prime is 1377819119. The next prime is 1377819161. The reversal of 1377819128 is 8219187731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247625 + ... + 253127.

It is an arithmetic number, because the mean of its divisors is an integer number (49040640).

Almost surely, 2^1377819128 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 1377819128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569300480).

1377819128 is an abundant number, since it is smaller than the sum of its proper divisors (1760781832).

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

1377819128 is a wasteful number, since it uses less digits than its factorization.

1377819128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5796 (or 5792 counting only the distinct ones).

The product of its digits is 169344, while the sum is 47.

The square root of 1377819128 is about 37118.9860852906. The cubic root of 1377819128 is about 1112.7494882616.

The spelling of 1377819128 in words is "one billion, three hundred seventy-seven million, eight hundred nineteen thousand, one hundred twenty-eight".