1493447918 has 16 divisors (see below), whose sum is σ = 2361336720. Its totient is φ = 706444416.

The previous prime is 1493447911. The next prime is 1493447927. The reversal of 1493447918 is 8197443941.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493447911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 54662.

It is an arithmetic number, because the mean of its divisors is an integer number (147583545).

Almost surely, 2^1493447918 is an apocalyptic number.

1493447918 is a deficient number, since it is larger than the sum of its proper divisors (867888802).

1493447918 is a wasteful number, since it uses less digits than its factorization.

1493447918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54371.

The product of its digits is 870912, while the sum is 50.

The square root of 1493447918 is about 38645.1538747098. The cubic root of 1493447918 is about 1143.0450850690.

The spelling of 1493447918 in words is "one billion, four hundred ninety-three million, four hundred forty-seven thousand, nine hundred eighteen".