1493794368 has 126 divisors (see below), whose sum is σ = 4706542022. Its totient is φ = 452643840.

The previous prime is 1493794361. The next prime is 1493794399. The reversal of 1493794368 is 8634973941.

It is a happy number.

1493794368 is a `hidden beast` number, since 1 + 493 + 7 + 94 + 3 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 954068544 + 539725824 = 30888^2 + 23232^2 .

It is a super-2 number, since 2×1493794368² = 4462843227737038848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1493794361) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 58980 + ... + 80412.

Almost surely, 2^1493794368 is an apocalyptic number.

1493794368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1493794368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2353271011).

1493794368 is an abundant number, since it is smaller than the sum of its proper divisors (3212747654).

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

1493794368 is a wasteful number, since it uses less digits than its factorization.

1493794368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21473 (or 21449 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1493794368 is about 38649.6360655569. The cubic root of 1493794368 is about 1143.1334660892.

The spelling of 1493794368 in words is "one billion, four hundred ninety-three million, seven hundred ninety-four thousand, three hundred sixty-eight".