2144986597 has 16 divisors (see below), whose sum is σ = 2341710000. Its totient is φ = 1952907264.

The previous prime is 2144986549. The next prime is 2144986619. The reversal of 2144986597 is 7956894412.

It is a Cunningham number, because it is equal to 46314²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 162154756 + 1982831841 = 12734^2 + 44529^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144986597 - 2⁷ = 2144986469 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 (2144986297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517429 + ... + 521557.

It is an arithmetic number, because the mean of its divisors is an integer number (146356875).

Almost surely, 2^2144986597 is an apocalyptic number.

It is an amenable number.

2144986597 is a deficient number, since it is larger than the sum of its proper divisors (196723403).

2144986597 is a wasteful number, since it uses less digits than its factorization.

2144986597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680.

The product of its digits is 4354560, while the sum is 55.

The square root of 2144986597 is about 46314.0000107959. Note that the first 4 decimals coincide. The cubic root of 2144986597 is about 1289.6589040681.

The spelling of 2144986597 in words is "two billion, one hundred forty-four million, nine hundred eighty-six thousand, five hundred ninety-seven".