1385143836 has 48 divisors (see below), whose sum is σ = 3365180448. Its totient is φ = 443059200.

The previous prime is 1385143819. The next prime is 1385143841. The reversal of 1385143836 is 6383415831.

1385143836 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6936 + ... + 53088.

It is an arithmetic number, because the mean of its divisors is an integer number (70107926).

Almost surely, 2^1385143836 is an apocalyptic number.

It is an amenable number.

1385143836 is an abundant number, since it is smaller than the sum of its proper divisors (1980036612).

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

1385143836 is a wasteful number, since it uses less digits than its factorization.

1385143836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46262 (or 46260 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 1385143836 is about 37217.5205514822. The cubic root of 1385143836 is about 1114.7178560446.

The spelling of 1385143836 in words is "one billion, three hundred eighty-five million, one hundred forty-three thousand, eight hundred thirty-six".