1493791366 has 4 divisors (see below), whose sum is σ = 2240687052. Its totient is φ = 746895682.

The previous prime is 1493791361. The next prime is 1493791427. The reversal of 1493791366 is 6631973941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6631973941 = 20641 ⋅321301.

It is a super-2 number, since 2×1493791366² = 4462825290272291912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493791361) 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 as a sum of consecutive naturals, namely, 373447840 + ... + 373447843.

It is an arithmetic number, because the mean of its divisors is an integer number (560171763).

Almost surely, 2^1493791366 is an apocalyptic number.

1493791366 is a deficient number, since it is larger than the sum of its proper divisors (746895686).

1493791366 is an equidigital number, since it uses as much as digits as its factorization.

1493791366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746895685.

The product of its digits is 734832, while the sum is 49.

The square root of 1493791366 is about 38649.5972294667. The cubic root of 1493791366 is about 1143.1327003236.

The spelling of 1493791366 in words is "one billion, four hundred ninety-three million, seven hundred ninety-one thousand, three hundred sixty-six".