1140635251 has 16 divisors (see below), whose sum is σ = 1370073600. Its totient is φ = 928433088.

The previous prime is 1140635239. The next prime is 1140635257. The reversal of 1140635251 is 1525360411.

It is not a de Polignac number, because 1140635251 - 2⁷ = 1140635123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140635257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3106 + ... + 47863.

It is an arithmetic number, because the mean of its divisors is an integer number (85629600).

Almost surely, 2^1140635251 is an apocalyptic number.

1140635251 is a deficient number, since it is larger than the sum of its proper divisors (229438349).

1140635251 is a wasteful number, since it uses less digits than its factorization.

1140635251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51138.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1140635251 is about 33773.2919775375. The cubic root of 1140635251 is about 1044.8379291247.

Adding to 1140635251 its reverse (1525360411), we get a palindrome (2665995662).

The spelling of 1140635251 in words is "one billion, one hundred forty million, six hundred thirty-five thousand, two hundred fifty-one".