2147489918 has 16 divisors (see below), whose sum is σ = 3767026560. Its totient is φ = 898949016.

The previous prime is 2147489917. The next prime is 2147489941. The reversal of 2147489918 is 8199847412.

It is a super-2 number, since 2×2147489918² = 9223425895823293448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2147489918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147489917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1783028 + ... + 1784231.

It is an arithmetic number, because the mean of its divisors is an integer number (235439160).

Almost surely, 2^2147489918 is an apocalyptic number.

2147489918 is a deficient number, since it is larger than the sum of its proper divisors (1619536642).

2147489918 is a wasteful number, since it uses less digits than its factorization.

2147489918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567311.

The product of its digits is 1161216, while the sum is 53.

The square root of 2147489918 is about 46341.0176625417. The cubic root of 2147489918 is about 1290.1604107154.

The spelling of 2147489918 in words is "two billion, one hundred forty-seven million, four hundred eighty-nine thousand, nine hundred eighteen".