1145405511 has 6 divisors (see below), whose sum is σ = 1654474640. Its totient is φ = 763603668.

The previous prime is 1145405509. The next prime is 1145405533. The reversal of 1145405511 is 1155045411.

1145405511 is a `hidden beast` number, since 1 + 145 + 4 + 0 + 5 + 511 = 666.

It is not a de Polignac number, because 1145405511 - 2¹ = 1145405509 is a prime.

It is a super-2 number, since 2×1145405511² = 2623907569258342242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145405501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63633631 + ... + 63633648.

Almost surely, 2^1145405511 is an apocalyptic number.

1145405511 is a deficient number, since it is larger than the sum of its proper divisors (509069129).

1145405511 is a wasteful number, since it uses less digits than its factorization.

1145405511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127267285 (or 127267282 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 1145405511 is about 33843.8400746724. The cubic root of 1145405511 is about 1046.2924451034.

It can be divided in two parts, 114 and 5405511, that added together give a square (5405625 = 2325²).

The spelling of 1145405511 in words is "one billion, one hundred forty-five million, four hundred five thousand, five hundred eleven".