1238285501 has 2 divisors, whose sum is σ = 1238285502. Its totient is φ = 1238285500.

The previous prime is 1238285497. The next prime is 1238285507. The reversal of 1238285501 is 1055828321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1233765625 + 4519876 = 35125^2 + 2126^2 .

It is a cyclic number.

It is not a de Polignac number, because 1238285501 - 2² = 1238285497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238285507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619142750 + 619142751.

It is an arithmetic number, because the mean of its divisors is an integer number (619142751).

Almost surely, 2^1238285501 is an apocalyptic number.

It is an amenable number.

1238285501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238285501 is an equidigital number, since it uses as much as digits as its factorization.

1238285501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1238285501 is about 35189.2810526160. The cubic root of 1238285501 is about 1073.8416948016.

The spelling of 1238285501 in words is "one billion, two hundred thirty-eight million, two hundred eighty-five thousand, five hundred one".