1385400552 has 16 divisors (see below), whose sum is σ = 3463501440. Its totient is φ = 461800176.

The previous prime is 1385400547. The next prime is 1385400553. The reversal of 1385400552 is 2550045831.

It is not an unprimeable number, because it can be changed into a prime (1385400553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28862488 + ... + 28862535.

It is an arithmetic number, because the mean of its divisors is an integer number (216468840).

Almost surely, 2^1385400552 is an apocalyptic number.

1385400552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1385400552 is an abundant number, since it is smaller than the sum of its proper divisors (2078100888).

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

1385400552 is a wasteful number, since it uses less digits than its factorization.

1385400552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57725032 (or 57725028 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1385400552 is about 37220.9692512164. The cubic root of 1385400552 is about 1114.7867173004.

The spelling of 1385400552 in words is "one billion, three hundred eighty-five million, four hundred thousand, five hundred fifty-two".