3785401121 has 2 divisors, whose sum is σ = 3785401122. Its totient is φ = 3785401120.

The previous prime is 3785401099. The next prime is 3785401127. The reversal of 3785401121 is 1211045873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2749848721 + 1035552400 = 52439^2 + 32180^2 .

It is a cyclic number.

It is not a de Polignac number, because 3785401121 - 2¹⁸ = 3785138977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3785401127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892700560 + 1892700561.

It is an arithmetic number, because the mean of its divisors is an integer number (1892700561).

Almost surely, 2^3785401121 is an apocalyptic number.

It is an amenable number.

3785401121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3785401121 is an equidigital number, since it uses as much as digits as its factorization.

3785401121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 3785401121 is about 61525.6135361526. The cubic root of 3785401121 is about 1558.4898163188.

Adding to 3785401121 its reverse (1211045873), we get a palindrome (4996446994).

The spelling of 3785401121 in words is "three billion, seven hundred eighty-five million, four hundred one thousand, one hundred twenty-one".