1493090899 has 4 divisors (see below), whose sum is σ = 1495197520. Its totient is φ = 1490984280.

The previous prime is 1493090873. The next prime is 1493090917. The reversal of 1493090899 is 9980903941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9980903941 = 619 ⋅16124239.

It is a cyclic number.

It is not a de Polignac number, because 1493090899 - 2¹¹ = 1493088851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1493090099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052247 + ... + 1053664.

It is an arithmetic number, because the mean of its divisors is an integer number (373799380).

Almost surely, 2^1493090899 is an apocalyptic number.

1493090899 is a deficient number, since it is larger than the sum of its proper divisors (2106621).

1493090899 is an equidigital number, since it uses as much as digits as its factorization.

1493090899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106620.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 1493090899 is about 38640.5344036544. The cubic root of 1493090899 is about 1142.9539935459.

The spelling of 1493090899 in words is "one billion, four hundred ninety-three million, ninety thousand, eight hundred ninety-nine".