3501663401 has 2 divisors, whose sum is σ = 3501663402. Its totient is φ = 3501663400.

The previous prime is 3501663391. The next prime is 3501663409. The reversal of 3501663401 is 1043661053.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2150733376 + 1350930025 = 46376^2 + 36755^2 .

It is a cyclic number.

It is not a de Polignac number, because 3501663401 - 2¹⁸ = 3501401257 is a prime.

It is not a weakly prime, because it can be changed into another prime (3501663409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1750831700 + 1750831701.

It is an arithmetic number, because the mean of its divisors is an integer number (1750831701).

Almost surely, 2^3501663401 is an apocalyptic number.

It is an amenable number.

3501663401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3501663401 is an equidigital number, since it uses as much as digits as its factorization.

3501663401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 3501663401 is about 59174.8544653893. The cubic root of 3501663401 is about 1518.5349747549.

The spelling of 3501663401 in words is "three billion, five hundred one million, six hundred sixty-three thousand, four hundred one".