1393144188 has 12 divisors (see below), whose sum is σ = 3250669800. Its totient is φ = 464381392.

The previous prime is 1393144187. The next prime is 1393144217. The reversal of 1393144188 is 8814413931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393144187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58047663 + ... + 58047686.

It is an arithmetic number, because the mean of its divisors is an integer number (270889150).

Almost surely, 2^1393144188 is an apocalyptic number.

It is an amenable number.

1393144188 is an abundant number, since it is smaller than the sum of its proper divisors (1857525612).

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

1393144188 is a wasteful number, since it uses less digits than its factorization.

1393144188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116095356 (or 116095354 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 1393144188 is about 37324.8467913801. The cubic root of 1393144188 is about 1116.8598767287.

The spelling of 1393144188 in words is "one billion, three hundred ninety-three million, one hundred forty-four thousand, one hundred eighty-eight".