1147380161 has 2 divisors, whose sum is σ = 1147380162. Its totient is φ = 1147380160.

The previous prime is 1147380127. The next prime is 1147380173. The reversal of 1147380161 is 1610837411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1027587136 + 119793025 = 32056^2 + 10945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147380161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147380061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573690080 + 573690081.

It is an arithmetic number, because the mean of its divisors is an integer number (573690081).

Almost surely, 2^1147380161 is an apocalyptic number.

It is an amenable number.

1147380161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147380161 is an equidigital number, since it uses as much as digits as its factorization.

1147380161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 1147380161 is about 33873.0004723526. Note that the first 3 decimals coincide. The cubic root of 1147380161 is about 1046.8933604455.

Subtracting from 1147380161 its sum of digits (32), we obtain a square (1147380129 = 33873²).

The spelling of 1147380161 in words is "one billion, one hundred forty-seven million, three hundred eighty thousand, one hundred sixty-one".