1381541028 has 48 divisors (see below), whose sum is σ = 3688688640. Its totient is φ = 394235424.

The previous prime is 1381541003. The next prime is 1381541081. The reversal of 1381541028 is 8201451831.

It is a super-2 number, since 2×1381541028² = 3817311224094593568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1381541028.

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, 60675 + ... + 80277.

It is an arithmetic number, because the mean of its divisors is an integer number (76847680).

Almost surely, 2^1381541028 is an apocalyptic number.

It is an amenable number.

1381541028 is an abundant number, since it is smaller than the sum of its proper divisors (2307147612).

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

1381541028 is a wasteful number, since it uses less digits than its factorization.

1381541028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20456 (or 20454 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 1381541028 is about 37169.0869944367. The cubic root of 1381541028 is about 1113.7505433935.

Adding to 1381541028 its reverse (8201451831), we get a palindrome (9582992859).

The spelling of 1381541028 in words is "one billion, three hundred eighty-one million, five hundred forty-one thousand, twenty-eight".