1388545 has 8 divisors (see below), whose sum is σ = 1673280. Its totient is φ = 1106160.

The previous prime is 1388483. The next prime is 1388587. The reversal of 1388545 is 5458831.

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

It is not a de Polignac number, because 1388545 - 2¹⁵ = 1355777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1388545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (209160).

It is a Proth number, since it is equal to 339 ⋅ 2¹² + 1 and 339 < 2¹².

2^1388545 is an apocalyptic number.

It is an amenable number.

1388545 is a deficient number, since it is larger than the sum of its proper divisors (284735).

1388545 is an equidigital number, since it uses as much as digits as its factorization.

1388545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175.

The product of its digits is 19200, while the sum is 34.

The square root of 1388545 is about 1178.3653932461. The cubic root of 1388545 is about 111.5629491648.

The spelling of 1388545 in words is "one million, three hundred eighty-eight thousand, five hundred forty-five".