2145232637 has 2 divisors, whose sum is σ = 2145232638. Its totient is φ = 2145232636.

The previous prime is 2145232619. The next prime is 2145232679. The reversal of 2145232637 is 7362325412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2106718201 + 38514436 = 45899^2 + 6206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145232637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145232597 and 2145232606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145232337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072616318 + 1072616319.

It is an arithmetic number, because the mean of its divisors is an integer number (1072616319).

Almost surely, 2^2145232637 is an apocalyptic number.

It is an amenable number.

2145232637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145232637 is an equidigital number, since it uses as much as digits as its factorization.

2145232637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 2145232637 is about 46316.6561508924. The cubic root of 2145232637 is about 1289.7082121532.

The spelling of 2145232637 in words is "two billion, one hundred forty-five million, two hundred thirty-two thousand, six hundred thirty-seven".