1381512 has 32 divisors (see below), whose sum is σ = 3768480. Its totient is φ = 418560.

The previous prime is 1381507. The next prime is 1381517. The reversal of 1381512 is 2151831.

It is an interprime number because it is at equal distance from previous prime (1381507) and next prime (1381517).

It is a super-2 number, since 2×1381512² = 3817150812288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1381517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2353 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (117765).

2^1381512 is an apocalyptic number.

1381512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1381512 is an abundant number, since it is smaller than the sum of its proper divisors (2386968).

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

1381512 is a wasteful number, since it uses less digits than its factorization.

1381512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253 (or 5249 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1381512 is about 1175.3773862041. The cubic root of 1381512 is about 111.3742742883.

The spelling of 1381512 in words is "one million, three hundred eighty-one thousand, five hundred twelve".