2045421437 has 2 divisors, whose sum is σ = 2045421438. Its totient is φ = 2045421436.

The previous prime is 2045421401. The next prime is 2045421479. The reversal of 2045421437 is 7341245402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2013227161 + 32194276 = 44869^2 + 5674^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045421437 - 2³⁰ = 971679613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045429437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022710718 + 1022710719.

It is an arithmetic number, because the mean of its divisors is an integer number (1022710719).

Almost surely, 2^2045421437 is an apocalyptic number.

It is an amenable number.

2045421437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045421437 is an equidigital number, since it uses as much as digits as its factorization.

2045421437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 2045421437 is about 45226.3356574463. The cubic root of 2045421437 is about 1269.3876472134.

Adding to 2045421437 its reverse (7341245402), we get a palindrome (9386666839).

The spelling of 2045421437 in words is "two billion, forty-five million, four hundred twenty-one thousand, four hundred thirty-seven".