1397371560 has 128 divisors (see below), whose sum is σ = 4555111680. Its totient is φ = 340881408.

The previous prime is 1397371543. The next prime is 1397371561. The reversal of 1397371560 is 651737931.

It is not an unprimeable number, because it can be changed into a prime (1397371561) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 172317 + ... + 180243.

It is an arithmetic number, because the mean of its divisors is an integer number (35586810).

Almost surely, 2^1397371560 is an apocalyptic number.

1397371560 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 1397371560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2277555840).

1397371560 is an abundant number, since it is smaller than the sum of its proper divisors (3157740120).

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

1397371560 is a wasteful number, since it uses less digits than its factorization.

1397371560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8067 (or 8063 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 1397371560 is about 37381.4333593564. The cubic root of 1397371560 is about 1117.9884066416.

It can be divided in two parts, 1397371 and 560, that added together give a palindrome (1397931).

The spelling of 1397371560 in words is "one billion, three hundred ninety-seven million, three hundred seventy-one thousand, five hundred sixty".