2238863761 has 2 divisors, whose sum is σ = 2238863762. Its totient is φ = 2238863760.

The previous prime is 2238863743. The next prime is 2238863777. The reversal of 2238863761 is 1673688322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1483713361 + 755150400 = 38519^2 + 27480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238863761 - 2¹⁹ = 2238339473 is a prime.

It is not a weakly prime, because it can be changed into another prime (2238863701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119431880 + 1119431881.

It is an arithmetic number, because the mean of its divisors is an integer number (1119431881).

Almost surely, 2^2238863761 is an apocalyptic number.

It is an amenable number.

2238863761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238863761 is an equidigital number, since it uses as much as digits as its factorization.

2238863761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 46.

The square root of 2238863761 is about 47316.6330268754. The cubic root of 2238863761 is about 1308.2052537347.

The spelling of 2238863761 in words is "two billion, two hundred thirty-eight million, eight hundred sixty-three thousand, seven hundred sixty-one".