3366172991 has 2 divisors, whose sum is σ = 3366172992. Its totient is φ = 3366172990.

The previous prime is 3366172969. The next prime is 3366173003. The reversal of 3366172991 is 1992716633.

It is a strong prime.

It is an emirp because it is prime and its reverse (1992716633) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3366172991 - 2²⁶ = 3299064127 is a prime.

It is a super-2 number, since 2×3366172991² = 22662241210675772162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3366172951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1683086495 + 1683086496.

It is an arithmetic number, because the mean of its divisors is an integer number (1683086496).

Almost surely, 2^3366172991 is an apocalyptic number.

3366172991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3366172991 is an equidigital number, since it uses as much as digits as its factorization.

3366172991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 3366172991 is about 58018.7296568961. The cubic root of 3366172991 is about 1498.6911532419.

The spelling of 3366172991 in words is "three billion, three hundred sixty-six million, one hundred seventy-two thousand, nine hundred ninety-one".