3149745947 has 2 divisors, whose sum is σ = 3149745948. Its totient is φ = 3149745946.

The previous prime is 3149745943. The next prime is 3149746007. The reversal of 3149745947 is 7495479413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3149745947 - 2² = 3149745943 is a prime.

It is not a weakly prime, because it can be changed into another prime (3149745943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574872973 + 1574872974.

It is an arithmetic number, because the mean of its divisors is an integer number (1574872974).

Almost surely, 2^3149745947 is an apocalyptic number.

3149745947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3149745947 is an equidigital number, since it uses as much as digits as its factorization.

3149745947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The square root of 3149745947 is about 56122.5974719631. The cubic root of 3149745947 is about 1465.8577987623.

The spelling of 3149745947 in words is "three billion, one hundred forty-nine million, seven hundred forty-five thousand, nine hundred forty-seven".