1144887151 has 4 divisors (see below), whose sum is σ = 1212233472. Its totient is φ = 1077540832.

The previous prime is 1144887131. The next prime is 1144887167. The reversal of 1144887151 is 1517884411.

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 1144887151 - 2²⁷ = 1010669423 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144887131) 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, 33673135 + ... + 33673168.

It is an arithmetic number, because the mean of its divisors is an integer number (303058368).

Almost surely, 2^1144887151 is an apocalyptic number.

1144887151 is a deficient number, since it is larger than the sum of its proper divisors (67346321).

1144887151 is an equidigital number, since it uses as much as digits as its factorization.

1144887151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67346320.

The product of its digits is 35840, while the sum is 40.

The square root of 1144887151 is about 33836.1810936163. The cubic root of 1144887151 is about 1046.1345860213.

The spelling of 1144887151 in words is "one billion, one hundred forty-four million, eight hundred eighty-seven thousand, one hundred fifty-one".