1397168380 has 48 divisors (see below), whose sum is σ = 3086748000. Its totient is φ = 530437376.

The previous prime is 1397168371. The next prime is 1397168411. The reversal of 1397168380 is 838617931.

It is a self number, because there is not a number n which added to its sum of digits gives 1397168380.

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, 13806 + ... + 54634.

It is an arithmetic number, because the mean of its divisors is an integer number (64307250).

Almost surely, 2^1397168380 is an apocalyptic number.

1397168380 is a gapful number since it is divisible by the number (10) 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 1397168380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1543374000).

1397168380 is an abundant number, since it is smaller than the sum of its proper divisors (1689579620).

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

1397168380 is a wasteful number, since it uses less digits than its factorization.

1397168380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40926 (or 40924 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1397168380 is about 37378.7156012616. The cubic root of 1397168380 is about 1117.9342182636.

The spelling of 1397168380 in words is "one billion, three hundred ninety-seven million, one hundred sixty-eight thousand, three hundred eighty".