1385604396 has 162 divisors, whose sum is σ = 3990068628. Its totient is φ = 405108000.

The previous prime is 1385604373. The next prime is 1385604401. The reversal of 1385604396 is 6934065831.

1385604396 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 604 + 39 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 4185951 + ... + 4186281.

Almost surely, 2^1385604396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385604396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995034314).

1385604396 is an abundant number, since it is smaller than the sum of its proper divisors (2604464232).

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

1385604396 is a wasteful number, since it uses less digits than its factorization.

1385604396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1385604396 is about 37223.7074456589. The cubic root of 1385604396 is about 1114.8413901623.

The spelling of 1385604396 in words is "one billion, three hundred eighty-five million, six hundred four thousand, three hundred ninety-six".