1381016 has 48 divisors (see below), whose sum is σ = 3255840. Its totient is φ = 544320.

The previous prime is 1380997. The next prime is 1381027. The reversal of 1381016 is 6101831.

1381016 is nontrivially palindromic in base 9.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4961 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (67830).

2^1381016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627920).

1381016 is an abundant number, since it is smaller than the sum of its proper divisors (1874824).

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

1381016 is a wasteful number, since it uses less digits than its factorization.

1381016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1381016 is about 1175.1663712003. The cubic root of 1381016 is about 111.3609439052.

Adding to 1381016 its reverse (6101831), we get a palindrome (7482847).

The spelling of 1381016 in words is "one million, three hundred eighty-one thousand, sixteen".