1397793100 has 144 divisors (see below), whose sum is σ = 3449779200. Its totient is φ = 487008000.

The previous prime is 1397793097. The next prime is 1397793107. The reversal of 1397793100 is 13977931.

It is a happy number.

It is a super-2 number, since 2×1397793100² = 3907651100815220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1397793107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6103786 + ... + 6104014.

It is an arithmetic number, because the mean of its divisors is an integer number (23956800).

Almost surely, 2^1397793100 is an apocalyptic number.

1397793100 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 1397793100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724889600).

1397793100 is an abundant number, since it is smaller than the sum of its proper divisors (2051986100).

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

1397793100 is a wasteful number, since it uses less digits than its factorization.

1397793100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 35721, while the sum is 40.

The square root of 1397793100 is about 37387.0712947671. The cubic root of 1397793100 is about 1118.1008151722.

1397793100 divided by its reverse (13977931) gives a square (100 = 10²).

It can be divided in two parts, 1397 and 793100, that added together give a palindrome (794497).

The spelling of 1397793100 in words is "one billion, three hundred ninety-seven million, seven hundred ninety-three thousand, one hundred".