1385254140 has 24 divisors (see below), whose sum is σ = 3878711760. Its totient is φ = 369401088.

The previous prime is 1385254139. The next prime is 1385254141. The reversal of 1385254140 is 414525831.

It is an interprime number because it is at equal distance from previous prime (1385254139) and next prime (1385254141).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385254141) 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, 11543725 + ... + 11543844.

It is an arithmetic number, because the mean of its divisors is an integer number (161612990).

Almost surely, 2^1385254140 is an apocalyptic number.

1385254140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385254140 is an abundant number, since it is smaller than the sum of its proper divisors (2493457620).

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

1385254140 is a wasteful number, since it uses less digits than its factorization.

1385254140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23087581 (or 23087579 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1385254140 is about 37219.0024046857. The cubic root of 1385254140 is about 1114.7474449271.

Adding to 1385254140 its reverse (414525831), we get a palindrome (1799779971).

The spelling of 1385254140 in words is "one billion, three hundred eighty-five million, two hundred fifty-four thousand, one hundred forty".