1145624387 has 4 divisors (see below), whose sum is σ = 1146277440. Its totient is φ = 1144971336.

The previous prime is 1145624383. The next prime is 1145624393. The reversal of 1145624387 is 7834265411.

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 1145624387 - 2² = 1145624383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145624383) 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, 323888 + ... + 327405.

It is an arithmetic number, because the mean of its divisors is an integer number (286569360).

Almost surely, 2^1145624387 is an apocalyptic number.

1145624387 is a deficient number, since it is larger than the sum of its proper divisors (653053).

1145624387 is an equidigital number, since it uses as much as digits as its factorization.

1145624387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653052.

The product of its digits is 161280, while the sum is 41.

The square root of 1145624387 is about 33847.0735367181. The cubic root of 1145624387 is about 1046.3590863402.

Adding to 1145624387 its reverse (7834265411), we get a palindrome (8979889798).

The spelling of 1145624387 in words is "one billion, one hundred forty-five million, six hundred twenty-four thousand, three hundred eighty-seven".