1377995328 has 140 divisors (see below), whose sum is σ = 4106308272. Its totient is φ = 456917760.

The previous prime is 1377995321. The next prime is 1377995351. The reversal of 1377995328 is 8235997731.

1377995328 is a `hidden beast` number, since 1 + 37 + 79 + 9 + 532 + 8 = 666.

It is a super-2 number, since 2×1377995328² = 3797742247979655168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1377995321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1176183 + ... + 1177353.

Almost surely, 2^1377995328 is an apocalyptic number.

1377995328 is a gapful number since it is divisible by the number (18) 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 1377995328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2053154136).

1377995328 is an abundant number, since it is smaller than the sum of its proper divisors (2728312944).

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

1377995328 is a wasteful number, since it uses less digits than its factorization.

1377995328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1403 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 1377995328 is about 37121.3594578647. The cubic root of 1377995328 is about 1112.7969202500.

The spelling of 1377995328 in words is "one billion, three hundred seventy-seven million, nine hundred ninety-five thousand, three hundred twenty-eight".