1397101056 has 320 divisors, whose sum is σ = 4319056896. Its totient is φ = 398131200.

The previous prime is 1397101049. The next prime is 1397101067. The reversal of 1397101056 is 6501017931.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22903266 + ... + 22903326.

Almost surely, 2^1397101056 is an apocalyptic number.

1397101056 is a gapful number since it is divisible by the number (16) 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 1397101056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159528448).

1397101056 is an abundant number, since it is smaller than the sum of its proper divisors (2921955840).

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

1397101056 is a wasteful number, since it uses less digits than its factorization.

1397101056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 1397101056 is about 37377.8150244232. The cubic root of 1397101056 is about 1117.9162617039.

Adding to 1397101056 its reverse (6501017931), we get a palindrome (7898118987).

The spelling of 1397101056 in words is "one billion, three hundred ninety-seven million, one hundred one thousand, fifty-six".