1487919009 has 4 divisors (see below), whose sum is σ = 1983892016. Its totient is φ = 991946004.

The previous prime is 1487918977. The next prime is 1487919019. The reversal of 1487919009 is 9009197841.

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 not a de Polignac number, because 1487919009 - 2⁵ = 1487918977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1487919019) 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, 247986499 + ... + 247986504.

It is an arithmetic number, because the mean of its divisors is an integer number (495973004).

Almost surely, 2^1487919009 is an apocalyptic number.

It is an amenable number.

1487919009 is a deficient number, since it is larger than the sum of its proper divisors (495973007).

1487919009 is an equidigital number, since it uses as much as digits as its factorization.

1487919009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495973006.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 1487919009 is about 38573.5532327526. The cubic root of 1487919009 is about 1141.6327811161.

The spelling of 1487919009 in words is "one billion, four hundred eighty-seven million, nine hundred nineteen thousand, nine".