1140251197 has 4 divisors (see below), whose sum is σ = 1189827360. Its totient is φ = 1090675036.

The previous prime is 1140251173. The next prime is 1140251201. The reversal of 1140251197 is 7911520411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140251197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140251297) 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 3 ways as a sum of consecutive naturals, for example, 24788047 + ... + 24788092.

It is an arithmetic number, because the mean of its divisors is an integer number (297456840).

Almost surely, 2^1140251197 is an apocalyptic number.

It is an amenable number.

1140251197 is a deficient number, since it is larger than the sum of its proper divisors (49576163).

1140251197 is an equidigital number, since it uses as much as digits as its factorization.

1140251197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49576162.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1140251197 is about 33767.6057338983. The cubic root of 1140251197 is about 1044.7206496729.

The spelling of 1140251197 in words is "one billion, one hundred forty million, two hundred fifty-one thousand, one hundred ninety-seven".