1484640789 has 4 divisors (see below), whose sum is σ = 1979521056. Its totient is φ = 989760524.

The previous prime is 1484640779. The next prime is 1484640803. The reversal of 1484640789 is 9870464841.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9870464841 = 3 ⋅3290154947.

It is a cyclic number.

It is not a de Polignac number, because 1484640789 - 2⁵ = 1484640757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1484640749) 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, 247440129 + ... + 247440134.

It is an arithmetic number, because the mean of its divisors is an integer number (494880264).

Almost surely, 2^1484640789 is an apocalyptic number.

It is an amenable number.

1484640789 is a deficient number, since it is larger than the sum of its proper divisors (494880267).

1484640789 is an equidigital number, since it uses as much as digits as its factorization.

1484640789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494880266.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 1484640789 is about 38531.0366977064. The cubic root of 1484640789 is about 1140.7937400790.

The spelling of 1484640789 in words is "one billion, four hundred eighty-four million, six hundred forty thousand, seven hundred eighty-nine".