1378151 has 2 divisors, whose sum is σ = 1378152. Its totient is φ = 1378150.

The previous prime is 1378147. The next prime is 1378163. The reversal of 1378151 is 1518731.

It is a weak prime.

It is an emirp because it is prime and its reverse (1518731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1378151 - 2² = 1378147 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1378151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378141) 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 as a sum of consecutive naturals, namely, 689075 + 689076.

It is an arithmetic number, because the mean of its divisors is an integer number (689076).

2^1378151 is an apocalyptic number.

1378151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378151 is an equidigital number, since it uses as much as digits as its factorization.

1378151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 1378151 is about 1173.9467619956. The cubic root of 1378151 is about 111.2838822859.

The spelling of 1378151 in words is "one million, three hundred seventy-eight thousand, one hundred fifty-one".