1147946749 has 2 divisors, whose sum is σ = 1147946750. Its totient is φ = 1147946748.

The previous prime is 1147946747. The next prime is 1147946801. The reversal of 1147946749 is 9476497411.

It is an a-pointer prime, because the next prime (1147946801) can be obtained adding 1147946749 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919181124 + 228765625 = 30318^2 + 15125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147946749 - 2¹ = 1147946747 is a prime.

Together with 1147946747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1147946696 and 1147946705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147946747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573973374 + 573973375.

It is an arithmetic number, because the mean of its divisors is an integer number (573973375).

Almost surely, 2^1147946749 is an apocalyptic number.

It is an amenable number.

1147946749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147946749 is an equidigital number, since it uses as much as digits as its factorization.

1147946749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 1147946749 is about 33881.3628562961. The cubic root of 1147946749 is about 1047.0656542869.

The spelling of 1147946749 in words is "one billion, one hundred forty-seven million, nine hundred forty-six thousand, seven hundred forty-nine".