1489999618 has 4 divisors (see below), whose sum is σ = 2234999430. Its totient is φ = 744999808.

The previous prime is 1489999591. The next prime is 1489999661. The reversal of 1489999618 is 8169999841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 885479049 + 604520569 = 29757^2 + 24587^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1489999618.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372499903 + ... + 372499906.

Almost surely, 2^1489999618 is an apocalyptic number.

1489999618 is a deficient number, since it is larger than the sum of its proper divisors (744999812).

1489999618 is an equidigital number, since it uses as much as digits as its factorization.

1489999618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744999811.

The product of its digits is 10077696, while the sum is 64.

The square root of 1489999618 is about 38600.5131831171. The cubic root of 1489999618 is about 1142.1646615776.

The spelling of 1489999618 in words is "one billion, four hundred eighty-nine million, nine hundred ninety-nine thousand, six hundred eighteen".