3790000401661 has 2 divisors, whose sum is σ = 3790000401662. Its totient is φ = 3790000401660.

The previous prime is 3790000401647. The next prime is 3790000401739. The reversal of 3790000401661 is 1661040000973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3646591256025 + 143409145636 = 1909605^2 + 378694^2 .

It is an emirp because it is prime and its reverse (1661040000973) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3790000401661 - 2⁹ = 3790000401149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3790000401661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3790000431661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895000200830 + 1895000200831.

It is an arithmetic number, because the mean of its divisors is an integer number (1895000200831).

Almost surely, 2^{3790000401661} is an apocalyptic number.

It is an amenable number.

3790000401661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3790000401661 is an equidigital number, since it uses as much as digits as its factorization.

3790000401661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 3790000401661 in words is "three trillion, seven hundred ninety billion, four hundred one thousand, six hundred sixty-one".