1385857120 has 48 divisors (see below), whose sum is σ = 3276458640. Its totient is φ = 553941504.

The previous prime is 1385857103. The next prime is 1385857127. The reversal of 1385857120 is 217585831.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385857127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326371 + ... + 330589.

It is an arithmetic number, because the mean of its divisors is an integer number (68259555).

Almost surely, 2^1385857120 is an apocalyptic number.

1385857120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385857120 is an abundant number, since it is smaller than the sum of its proper divisors (1890601520).

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

1385857120 is a wasteful number, since it uses less digits than its factorization.

1385857120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6279 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 1385857120 is about 37227.1019554303. The cubic root of 1385857120 is about 1114.9091656516.

The spelling of 1385857120 in words is "one billion, three hundred eighty-five million, eight hundred fifty-seven thousand, one hundred twenty".