1493781912 has 80 divisors (see below), whose sum is σ = 4781697360. Its totient is φ = 426793536.

The previous prime is 1493781907. The next prime is 1493781929. The reversal of 1493781912 is 2191873941.

1493781912 is a `hidden beast` number, since 1 + 493 + 78 + 1 + 91 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 160123 + ... + 169194.

It is an arithmetic number, because the mean of its divisors is an integer number (59771217).

Almost surely, 2^1493781912 is an apocalyptic number.

1493781912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1493781912 is an abundant number, since it is smaller than the sum of its proper divisors (3287915448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1493781912 is a wasteful number, since it uses less digits than its factorization.

1493781912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329342 (or 329329 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1493781912 is about 38649.4749252820. The cubic root of 1493781912 is about 1143.1302887420.

The spelling of 1493781912 in words is "one billion, four hundred ninety-three million, seven hundred eighty-one thousand, nine hundred twelve".