1493947090 has 8 divisors (see below), whose sum is σ = 2689104780. Its totient is φ = 597578832.

The previous prime is 1493947087. The next prime is 1493947099. The reversal of 1493947090 is 907493941.

It can be written as a sum of positive squares in 2 ways, for example, as 1434364129 + 59582961 = 37873^2 + 7719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1493947090.

It is not an unprimeable number, because it can be changed into a prime (1493947099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74697345 + ... + 74697364.

Almost surely, 2^1493947090 is an apocalyptic number.

1493947090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1493947090 is a deficient number, since it is larger than the sum of its proper divisors (1195157690).

1493947090 is a wasteful number, since it uses less digits than its factorization.

1493947090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149394716.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1493947090 is about 38651.6117387102. The cubic root of 1493947090 is about 1143.1724218481.

The spelling of 1493947090 in words is "one billion, four hundred ninety-three million, nine hundred forty-seven thousand, ninety".