1438545 has 16 divisors (see below), whose sum is σ = 2381760. Its totient is φ = 740544.

The previous prime is 1438537. The next prime is 1438583. The reversal of 1438545 is 5458341.

1438545 = T₆₂ + T₆₃ + ... + T₂₀₆.

It is not a de Polignac number, because 1438545 - 2³ = 1438537 is a prime.

It is an alternating number because its digits alternate between odd and even.

1438545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (148860).

2^1438545 is an apocalyptic number.

1438545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1438545 is a deficient number, since it is larger than the sum of its proper divisors (943215).

1438545 is a wasteful number, since it uses less digits than its factorization.

1438545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344.

The product of its digits is 9600, while the sum is 30.

The square root of 1438545 is about 1199.3935967813. The cubic root of 1438545 is about 112.8862771091.

The spelling of 1438545 in words is "one million, four hundred thirty-eight thousand, five hundred forty-five".