1145367771 has 8 divisors (see below), whose sum is σ = 1533885504. Its totient is φ = 760214280.

The previous prime is 1145367761. The next prime is 1145367787. The reversal of 1145367771 is 1777635411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1145367771 - 2⁵ = 1145367739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145367721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840265 + ... + 841626.

It is an arithmetic number, because the mean of its divisors is an integer number (191735688).

Almost surely, 2^1145367771 is an apocalyptic number.

1145367771 is a deficient number, since it is larger than the sum of its proper divisors (388517733).

1145367771 is a wasteful number, since it uses less digits than its factorization.

1145367771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682121.

The product of its digits is 123480, while the sum is 42.

The square root of 1145367771 is about 33843.2825092366. The cubic root of 1145367771 is about 1046.2809535370.

The spelling of 1145367771 in words is "one billion, one hundred forty-five million, three hundred sixty-seven thousand, seven hundred seventy-one".