1493805 has 16 divisors (see below), whose sum is σ = 2436480. Its totient is φ = 781248.

The previous prime is 1493783. The next prime is 1493813. The reversal of 1493805 is 5083941.

1493805 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 1493805 - 2⁶ = 1493741 is a prime.

It is a congruent 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, 145 + ... + 1734.

It is an arithmetic number, because the mean of its divisors is an integer number (152280).

2^1493805 is an apocalyptic number.

1493805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1493805 is a deficient number, since it is larger than the sum of its proper divisors (942675).

1493805 is a wasteful number, since it uses less digits than its factorization.

1493805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1493805 is about 1222.2131565320. The cubic root of 1493805 is about 114.3136178146.

The spelling of 1493805 in words is "one million, four hundred ninety-three thousand, eight hundred five".