1140545451 has 4 divisors (see below), whose sum is σ = 1520727272. Its totient is φ = 760363632.

The previous prime is 1140545449. The next prime is 1140545473. The reversal of 1140545451 is 1545450411.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1140545451 - 2¹ = 1140545449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140545051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190090906 + ... + 190090911.

It is an arithmetic number, because the mean of its divisors is an integer number (380181818).

Almost surely, 2^1140545451 is an apocalyptic number.

1140545451 is a deficient number, since it is larger than the sum of its proper divisors (380181821).

1140545451 is an equidigital number, since it uses as much as digits as its factorization.

1140545451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380181820.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 1140545451 is about 33771.9624984987. The cubic root of 1140545451 is about 1044.8105090509.

Adding to 1140545451 its reverse (1545450411), we get a palindrome (2685995862).

The spelling of 1140545451 in words is "one billion, one hundred forty million, five hundred forty-five thousand, four hundred fifty-one".