1145254639 has 2 divisors, whose sum is σ = 1145254640. Its totient is φ = 1145254638.

The previous prime is 1145254619. The next prime is 1145254717. The reversal of 1145254639 is 9364525411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145254639 - 2¹³ = 1145246447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145254609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572627319 + 572627320.

It is an arithmetic number, because the mean of its divisors is an integer number (572627320).

Almost surely, 2^1145254639 is an apocalyptic number.

1145254639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145254639 is an equidigital number, since it uses as much as digits as its factorization.

1145254639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 1145254639 is about 33841.6110579860. The cubic root of 1145254639 is about 1046.2465041204.

The spelling of 1145254639 in words is "one billion, one hundred forty-five million, two hundred fifty-four thousand, six hundred thirty-nine".