3101920949 has 2 divisors, whose sum is σ = 3101920950. Its totient is φ = 3101920948.

The previous prime is 3101920919. The next prime is 3101920951. The reversal of 3101920949 is 9490291013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3065836900 + 36084049 = 55370^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 3101920949 - 2¹⁶ = 3101855413 is a prime.

Together with 3101920951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3101920919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550960474 + 1550960475.

It is an arithmetic number, because the mean of its divisors is an integer number (1550960475).

Almost surely, 2^3101920949 is an apocalyptic number.

It is an amenable number.

3101920949 is a deficient number, since it is larger than the sum of its proper divisors (1).

3101920949 is an equidigital number, since it uses as much as digits as its factorization.

3101920949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 3101920949 is about 55694.8915880083. The cubic root of 3101920949 is about 1458.4008494703.

The spelling of 3101920949 in words is "three billion, one hundred one million, nine hundred twenty thousand, nine hundred forty-nine".