1863115061 has 2 divisors, whose sum is σ = 1863115062. Its totient is φ = 1863115060.

The previous prime is 1863115049. The next prime is 1863115081. The reversal of 1863115061 is 1605113681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1079451025 + 783664036 = 32855^2 + 27994^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863115061 - 2⁶ = 1863114997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1863115081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931557530 + 931557531.

It is an arithmetic number, because the mean of its divisors is an integer number (931557531).

Almost surely, 2^1863115061 is an apocalyptic number.

It is an amenable number.

1863115061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863115061 is an equidigital number, since it uses as much as digits as its factorization.

1863115061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1863115061 is about 43163.8165712904. The cubic root of 1863115061 is about 1230.4951101271.

The spelling of 1863115061 in words is "one billion, eight hundred sixty-three million, one hundred fifteen thousand, sixty-one".