1493591 has 4 divisors (see below), whose sum is σ = 1629384. Its totient is φ = 1357800.

The previous prime is 1493581. The next prime is 1493599. The reversal of 1493591 is 1953941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1493591 - 2¹⁰ = 1492567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67880 + ... + 67901.

It is an arithmetic number, because the mean of its divisors is an integer number (407346).

2^1493591 is an apocalyptic number.

1493591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1493591 is a deficient number, since it is larger than the sum of its proper divisors (135793).

1493591 is a wasteful number, since it uses less digits than its factorization.

1493591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135792.

The product of its digits is 4860, while the sum is 32.

The square root of 1493591 is about 1222.1256072925. The cubic root of 1493591 is about 114.3081587615.

The spelling of 1493591 in words is "one million, four hundred ninety-three thousand, five hundred ninety-one".