1378011 has 4 divisors (see below), whose sum is σ = 1837352. Its totient is φ = 918672.

The previous prime is 1378009. The next prime is 1378019. The reversal of 1378011 is 1108731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1378011 - 2¹ = 1378009 is a prime.

It is a super-2 number, since 2×1378011² = 3797828632242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229666 + ... + 229671.

It is an arithmetic number, because the mean of its divisors is an integer number (459338).

2^1378011 is an apocalyptic number.

1378011 is a deficient number, since it is larger than the sum of its proper divisors (459341).

1378011 is an equidigital number, since it uses as much as digits as its factorization.

1378011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459340.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1378011 is about 1173.8871325643. The cubic root of 1378011 is about 111.2801138863.

The spelling of 1378011 in words is "one million, three hundred seventy-eight thousand, eleven".