1145667138 has 48 divisors (see below), whose sum is σ = 2907749664. Its totient is φ = 297575040.

The previous prime is 1145667137. The next prime is 1145667157. The reversal of 1145667138 is 8317665411.

It is a super-2 number, since 2×1145667138² = 2625106382186222088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1145667138.

It is not an unprimeable number, because it can be changed into a prime (1145667137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173895 + ... + 180362.

It is an arithmetic number, because the mean of its divisors is an integer number (60578118).

Almost surely, 2^1145667138 is an apocalyptic number.

1145667138 is an abundant number, since it is smaller than the sum of its proper divisors (1762082526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145667138 is a wasteful number, since it uses less digits than its factorization.

1145667138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354287 (or 354280 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 1145667138 is about 33847.7050625297. The cubic root of 1145667138 is about 1046.3721017582.

The spelling of 1145667138 in words is "one billion, one hundred forty-five million, six hundred sixty-seven thousand, one hundred thirty-eight".