1238861101 has 2 divisors, whose sum is σ = 1238861102. Its totient is φ = 1238861100.

The previous prime is 1238861059. The next prime is 1238861119. The reversal of 1238861101 is 1011688321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1137375625 + 101485476 = 33725^2 + 10074^2 .

It is a cyclic number.

It is not a de Polignac number, because 1238861101 - 2¹⁷ = 1238730029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238861201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619430550 + 619430551.

It is an arithmetic number, because the mean of its divisors is an integer number (619430551).

Almost surely, 2^1238861101 is an apocalyptic number.

It is an amenable number.

1238861101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238861101 is an equidigital number, since it uses as much as digits as its factorization.

1238861101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1238861101 is about 35197.4587292890. The cubic root of 1238861101 is about 1074.0080558795.

The spelling of 1238861101 in words is "one billion, two hundred thirty-eight million, eight hundred sixty-one thousand, one hundred one".