1145131546 has 32 divisors (see below), whose sum is σ = 1885403520. Its totient is φ = 518457024.

The previous prime is 1145131541. The next prime is 1145131549. The reversal of 1145131546 is 6451315411.

It is a super-2 number, since 2×1145131546² = 2622652515288700232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145131541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289941 + ... + 293863.

It is an arithmetic number, because the mean of its divisors is an integer number (58918860).

Almost surely, 2^1145131546 is an apocalyptic number.

1145131546 is a deficient number, since it is larger than the sum of its proper divisors (740271974).

1145131546 is a wasteful number, since it uses less digits than its factorization.

1145131546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150.

The product of its digits is 7200, while the sum is 31.

The square root of 1145131546 is about 33839.7923456986. The cubic root of 1145131546 is about 1046.2090189386.

Adding to 1145131546 its reverse (6451315411), we get a palindrome (7596446957).

The spelling of 1145131546 in words is "one billion, one hundred forty-five million, one hundred thirty-one thousand, five hundred forty-six".