1146811257 has 32 divisors (see below), whose sum is σ = 1776384000. Its totient is φ = 729842256.

The previous prime is 1146811229. The next prime is 1146811307. The reversal of 1146811257 is 7521186411.

It is not a de Polignac number, because 1146811257 - 2¹² = 1146807161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1146811657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370438 + ... + 373520.

It is an arithmetic number, because the mean of its divisors is an integer number (55512000).

Almost surely, 2^1146811257 is an apocalyptic number.

It is an amenable number.

1146811257 is a deficient number, since it is larger than the sum of its proper divisors (629572743).

1146811257 is a wasteful number, since it uses less digits than its factorization.

1146811257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3708 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 1146811257 is about 33864.6018284580. The cubic root of 1146811257 is about 1046.7203052533.

Adding to 1146811257 its reverse (7521186411), we get a palindrome (8667997668).

The spelling of 1146811257 in words is "one billion, one hundred forty-six million, eight hundred eleven thousand, two hundred fifty-seven".