1490434688 has 16 divisors (see below), whose sum is σ = 2969225610. Its totient is φ = 745217280.

The previous prime is 1490434681. The next prime is 1490434691. The reversal of 1490434688 is 8864340941.

It can be written as a sum of positive squares in only one way, i.e., 1437319744 + 53114944 = 37912^2 + 7288^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (1490434681) 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, 5821883 + ... + 5822138.

Almost surely, 2^1490434688 is an apocalyptic number.

It is an amenable number.

1490434688 is a deficient number, since it is larger than the sum of its proper divisors (1478790922).

1490434688 is an equidigital number, since it uses as much as digits as its factorization.

1490434688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11644035 (or 11644023 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 1490434688 is about 38606.1483186292. The cubic root of 1490434688 is about 1142.2758189262.

The spelling of 1490434688 in words is "one billion, four hundred ninety million, four hundred thirty-four thousand, six hundred eighty-eight".