2389997437 has 2 divisors, whose sum is σ = 2389997438. Its totient is φ = 2389997436.

The previous prime is 2389997419. The next prime is 2389997473. The reversal of 2389997437 is 7347999832.

Together with next prime (2389997473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1529513881 + 860483556 = 39109^2 + 29334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2389997437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389997417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194998718 + 1194998719.

It is an arithmetic number, because the mean of its divisors is an integer number (1194998719).

Almost surely, 2^2389997437 is an apocalyptic number.

It is an amenable number.

2389997437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389997437 is an equidigital number, since it uses as much as digits as its factorization.

2389997437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 61.

The square root of 2389997437 is about 48887.6000331372. The cubic root of 2389997437 is about 1337.0032975802.

The spelling of 2389997437 in words is "two billion, three hundred eighty-nine million, nine hundred ninety-seven thousand, four hundred thirty-seven".