1388151 has 8 divisors (see below), whose sum is σ = 2056560. Its totient is φ = 925416.

The previous prime is 1388141. The next prime is 1388161. The reversal of 1388151 is 1518831.

It is an interprime number because it is at equal distance from previous prime (1388141) and next prime (1388161).

It is not a de Polignac number, because 1388151 - 2¹⁴ = 1371767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 51413 = 1388151 / (1 + 3 + 8 + 8 + 1 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25680 + ... + 25733.

It is an arithmetic number, because the mean of its divisors is an integer number (257070).

2^1388151 is an apocalyptic number.

1388151 is a deficient number, since it is larger than the sum of its proper divisors (668409).

1388151 is an equidigital number, since it uses as much as digits as its factorization.

1388151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51422 (or 51416 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 1388151 is about 1178.1982006437. The cubic root of 1388151 is about 111.5523961614.

The spelling of 1388151 in words is "one million, three hundred eighty-eight thousand, one hundred fifty-one".