2145364180 has 48 divisors (see below), whose sum is σ = 4548022416. Its totient is φ = 850037760.

The previous prime is 2145364171. The next prime is 2145364189. The reversal of 2145364180 is 814635412.

It is an interprime number because it is at equal distance from previous prime (2145364171) and next prime (2145364189).

It can be written as a sum of positive squares in 8 ways, for example, as 2414916 + 2142949264 = 1554^2 + 46292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145364189) 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, 1245720 + ... + 1247440.

It is an arithmetic number, because the mean of its divisors is an integer number (94750467).

Almost surely, 2^2145364180 is an apocalyptic number.

2145364180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145364180 is an abundant number, since it is smaller than the sum of its proper divisors (2402658236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145364180 is a wasteful number, since it uses less digits than its factorization.

2145364180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 2145364180 is about 46318.0761690293. The cubic root of 2145364180 is about 1289.7345727162.

Adding to 2145364180 its reverse (814635412), we get a palindrome (2959999592).

The spelling of 2145364180 in words is "two billion, one hundred forty-five million, three hundred sixty-four thousand, one hundred eighty".