1393611828 has 24 divisors (see below), whose sum is σ = 3716298432. Its totient is φ = 398174784.

The previous prime is 1393611803. The next prime is 1393611833. The reversal of 1393611828 is 8281163931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1393611828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8295225 + ... + 8295392.

It is an arithmetic number, because the mean of its divisors is an integer number (154845768).

Almost surely, 2^1393611828 is an apocalyptic number.

It is an amenable number.

1393611828 is an abundant number, since it is smaller than the sum of its proper divisors (2322686604).

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

1393611828 is a wasteful number, since it uses less digits than its factorization.

1393611828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16590631 (or 16590629 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 1393611828 is about 37331.1107255061. The cubic root of 1393611828 is about 1116.9848290797.

The spelling of 1393611828 in words is "one billion, three hundred ninety-three million, six hundred eleven thousand, eight hundred twenty-eight".