1146561511 has 2 divisors, whose sum is σ = 1146561512. Its totient is φ = 1146561510.

The previous prime is 1146561509. The next prime is 1146561527. The reversal of 1146561511 is 1151656411.

It is a weak prime.

It is an emirp because it is prime and its reverse (1151656411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1146561511 - 2¹ = 1146561509 is a prime.

Together with 1146561509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146561571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573280755 + 573280756.

It is an arithmetic number, because the mean of its divisors is an integer number (573280756).

Almost surely, 2^1146561511 is an apocalyptic number.

1146561511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146561511 is an equidigital number, since it uses as much as digits as its factorization.

1146561511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 31.

The square root of 1146561511 is about 33860.9142079773. The cubic root of 1146561511 is about 1046.6443168153.

The spelling of 1146561511 in words is "one billion, one hundred forty-six million, five hundred sixty-one thousand, five hundred eleven".