1438525460 has 12 divisors (see below), whose sum is σ = 3020903508. Its totient is φ = 575410176.

The previous prime is 1438525453. The next prime is 1438525463. The reversal of 1438525460 is 645258341.

It can be written as a sum of positive squares in 2 ways, for example, as 722641924 + 715883536 = 26882^2 + 26756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438525463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35963117 + ... + 35963156.

It is an arithmetic number, because the mean of its divisors is an integer number (251741959).

Almost surely, 2^1438525460 is an apocalyptic number.

1438525460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1438525460 is an abundant number, since it is smaller than the sum of its proper divisors (1582378048).

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

1438525460 is a wasteful number, since it uses less digits than its factorization.

1438525460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71926282 (or 71926280 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 1438525460 is about 37927.8981753537. The cubic root of 1438525460 is about 1128.8576598901.

The spelling of 1438525460 in words is "one billion, four hundred thirty-eight million, five hundred twenty-five thousand, four hundred sixty".