3465561991 has 2 divisors, whose sum is σ = 3465561992. Its totient is φ = 3465561990.

The previous prime is 3465561949. The next prime is 3465562003. The reversal of 3465561991 is 1991655643.

It is a strong prime.

It is an emirp because it is prime and its reverse (1991655643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3465561991 - 2¹³ = 3465553799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3465561391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1732780995 + 1732780996.

It is an arithmetic number, because the mean of its divisors is an integer number (1732780996).

Almost surely, 2^3465561991 is an apocalyptic number.

3465561991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3465561991 is an equidigital number, since it uses as much as digits as its factorization.

3465561991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 49.

The square root of 3465561991 is about 58869.0240364149. The cubic root of 3465561991 is about 1513.2983455214.

The spelling of 3465561991 in words is "three billion, four hundred sixty-five million, five hundred sixty-one thousand, nine hundred ninety-one".