1380511 has 8 divisors (see below), whose sum is σ = 1543248. Its totient is φ = 1224000.

The previous prime is 1380499. The next prime is 1380517. The reversal of 1380511 is 1150831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380511 is a prime.

It is a super-2 number, since 2×1380511² = 3811621242242, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (192906).

2^1380511 is an apocalyptic number.

1380511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1380511 is a deficient number, since it is larger than the sum of its proper divisors (162737).

1380511 is a wasteful number, since it uses less digits than its factorization.

1380511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1380511 is about 1174.9514883603. The cubic root of 1380511 is about 111.3473683606.

It can be divided in two parts, 1380 and 511, that added together give a triangular number (1891 = T₆₁).

The spelling of 1380511 in words is "one million, three hundred eighty thousand, five hundred eleven".