1141439251 has 4 divisors (see below), whose sum is σ = 1178259904. Its totient is φ = 1104618600.

The previous prime is 1141439237. The next prime is 1141439261. The reversal of 1141439251 is 1529341411.

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

It is a cyclic number.

It is not a de Polignac number, because 1141439251 - 2⁵ = 1141439219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 36820621 = 1141439251 / (1 + 1 + 4 + 1 + 4 + 3 + 9 + 2 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (1141439261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18410280 + ... + 18410341.

It is an arithmetic number, because the mean of its divisors is an integer number (294564976).

Almost surely, 2^1141439251 is an apocalyptic number.

1141439251 is a deficient number, since it is larger than the sum of its proper divisors (36820653).

1141439251 is an equidigital number, since it uses as much as digits as its factorization.

1141439251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36820652.

The product of its digits is 4320, while the sum is 31.

The square root of 1141439251 is about 33785.1927773100. The cubic root of 1141439251 is about 1045.0833632359.

The spelling of 1141439251 in words is "one billion, one hundred forty-one million, four hundred thirty-nine thousand, two hundred fifty-one".