1397146818 has 8 divisors (see below), whose sum is σ = 2794293648. Its totient is φ = 465715604.

The previous prime is 1397146813. The next prime is 1397146847. The reversal of 1397146818 is 8186417931.

It is a sphenic number, since it is the product of 3 distinct primes.

1397146818 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1397146813) 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 3 ways as a sum of consecutive naturals, for example, 116428896 + ... + 116428907.

It is an arithmetic number, because the mean of its divisors is an integer number (349286706).

Almost surely, 2^1397146818 is an apocalyptic number.

1397146818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1397146818 is a wasteful number, since it uses less digits than its factorization.

1397146818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232857808.

The product of its digits is 290304, while the sum is 48.

The square root of 1397146818 is about 37378.4271739730. The cubic root of 1397146818 is about 1117.9284673410.

The spelling of 1397146818 in words is "one billion, three hundred ninety-seven million, one hundred forty-six thousand, eight hundred eighteen".