1377021048 has 128 divisors (see below), whose sum is σ = 3931200000. Its totient is φ = 398449152.

The previous prime is 1377021047. The next prime is 1377021053. The reversal of 1377021048 is 8401207731.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377021043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 882493 + ... + 884051.

It is an arithmetic number, because the mean of its divisors is an integer number (30712500).

Almost surely, 2^1377021048 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 1377021048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600000).

1377021048 is an abundant number, since it is smaller than the sum of its proper divisors (2554178952).

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

1377021048 is a wasteful number, since it uses less digits than its factorization.

1377021048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1377021048 is about 37108.2342344661. The cubic root of 1377021048 is about 1112.5345992353.

Adding to 1377021048 its reverse (8401207731), we get a palindrome (9778228779).

The spelling of 1377021048 in words is "one billion, three hundred seventy-seven million, twenty-one thousand, forty-eight".