1144511406 has 12 divisors (see below), whose sum is σ = 2479774752. Its totient is φ = 381503796.

The previous prime is 1144511399. The next prime is 1144511471. The reversal of 1144511406 is 6041154411.

1144511406 is a `hidden beast` number, since 1 + 144 + 511 + 4 + 0 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1144511406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31791966 + ... + 31792001.

It is an arithmetic number, because the mean of its divisors is an integer number (206647896).

Almost surely, 2^1144511406 is an apocalyptic number.

1144511406 is an abundant number, since it is smaller than the sum of its proper divisors (1335263346).

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

1144511406 is a wasteful number, since it uses less digits than its factorization.

1144511406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63583975 (or 63583972 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1144511406 is about 33830.6282235491. The cubic root of 1144511406 is about 1046.0201284960.

Adding to 1144511406 its reverse (6041154411), we get a palindrome (7185665817).

The spelling of 1144511406 in words is "one billion, one hundred forty-four million, five hundred eleven thousand, four hundred six".