1393445516 has 24 divisors (see below), whose sum is σ = 2514593760. Its totient is φ = 675216000.

The previous prime is 1393445483. The next prime is 1393445531. The reversal of 1393445516 is 6155443931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3371 + ... + 52898.

It is an arithmetic number, because the mean of its divisors is an integer number (104774740).

Almost surely, 2^1393445516 is an apocalyptic number.

It is an amenable number.

1393445516 is a deficient number, since it is larger than the sum of its proper divisors (1121148244).

1393445516 is a wasteful number, since it uses less digits than its factorization.

1393445516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56465 (or 56463 counting only the distinct ones).

The product of its digits is 194400, while the sum is 41.

The square root of 1393445516 is about 37328.8831335737. The cubic root of 1393445516 is about 1116.9403940925.

The spelling of 1393445516 in words is "one billion, three hundred ninety-three million, four hundred forty-five thousand, five hundred sixteen".