3815190869081 has 2 divisors, whose sum is σ = 3815190869082. Its totient is φ = 3815190869080.

The previous prime is 3815190869069. The next prime is 3815190869089. The reversal of 3815190869081 is 1809680915183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2561731492681 + 1253459376400 = 1600541^2 + 1119580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3815190869081 is a prime.

It is a super-2 number, since 2×3815190869081² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3815190869081.

It is not a weakly prime, because it can be changed into another prime (3815190869089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1907595434540 + 1907595434541.

It is an arithmetic number, because the mean of its divisors is an integer number (1907595434541).

Almost surely, 2^{3815190869081} is an apocalyptic number.

It is an amenable number.

3815190869081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3815190869081 is an equidigital number, since it uses as much as digits as its factorization.

3815190869081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 59.

The spelling of 3815190869081 in words is "three trillion, eight hundred fifteen billion, one hundred ninety million, eight hundred sixty-nine thousand, eighty-one".