1066994145 has 96 divisors (see below), whose sum is σ = 2183500800. Its totient is φ = 471923712.

The previous prime is 1066994143. The next prime is 1066994167. The reversal of 1066994145 is 5414996601.

It is a happy number.

It is not a de Polignac number, because 1066994145 - 2¹ = 1066994143 is a prime.

It is a super-2 number, since 2×1066994145² = 2276953010928562050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1066994145.

It is not an unprimeable number, because it can be changed into a prime (1066994143) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1318501 + ... + 1319309.

It is an arithmetic number, because the mean of its divisors is an integer number (22744800).

Almost surely, 2^1066994145 is an apocalyptic number.

1066994145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066994145 is an abundant number, since it is smaller than the sum of its proper divisors (1116506655).

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

1066994145 is a wasteful number, since it uses less digits than its factorization.

1066994145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1066994145 is about 32664.8763199863. The cubic root of 1066994145 is about 1021.8504615492.

The spelling of 1066994145 in words is "one billion, sixty-six million, nine hundred ninety-four thousand, one hundred forty-five".