1490468789 has 4 divisors (see below), whose sum is σ = 1491284640. Its totient is φ = 1489652940.

The previous prime is 1490468779. The next prime is 1490468827. The reversal of 1490468789 is 9878640941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1490468789 - 2²⁰ = 1489420213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490468719) 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, 405179 + ... + 408840.

It is an arithmetic number, because the mean of its divisors is an integer number (372821160).

Almost surely, 2^1490468789 is an apocalyptic number.

It is an amenable number.

1490468789 is a deficient number, since it is larger than the sum of its proper divisors (815851).

1490468789 is an equidigital number, since it uses as much as digits as its factorization.

1490468789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815850.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 1490468789 is about 38606.5899685533. The cubic root of 1490468789 is about 1142.2845305795.

The spelling of 1490468789 in words is "one billion, four hundred ninety million, four hundred sixty-eight thousand, seven hundred eighty-nine".