1377396168 has 64 divisors (see below), whose sum is σ = 3669442560. Its totient is φ = 429351936.

The previous prime is 1377396149. The next prime is 1377396191. The reversal of 1377396168 is 8616937731.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1377396168.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53305 + ... + 74807.

It is an arithmetic number, because the mean of its divisors is an integer number (57335040).

Almost surely, 2^1377396168 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 1377396168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834721280).

1377396168 is an abundant number, since it is smaller than the sum of its proper divisors (2292046392).

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

1377396168 is a wasteful number, since it uses less digits than its factorization.

1377396168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21686 (or 21682 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 1377396168 is about 37113.2882940868. The cubic root of 1377396168 is about 1112.6356134475.

The spelling of 1377396168 in words is "one billion, three hundred seventy-seven million, three hundred ninety-six thousand, one hundred sixty-eight".