1145257949 has 8 divisors (see below), whose sum is σ = 1250840448. Its totient is φ = 1039920160.

The previous prime is 1145257943. The next prime is 1145257969. The reversal of 1145257949 is 9497525411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145257949 - 2¹² = 1145253853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145257943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51317 + ... + 70170.

It is an arithmetic number, because the mean of its divisors is an integer number (156355056).

Almost surely, 2^1145257949 is an apocalyptic number.

It is an amenable number.

1145257949 is a deficient number, since it is larger than the sum of its proper divisors (105582499).

1145257949 is a wasteful number, since it uses less digits than its factorization.

1145257949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122355.

The product of its digits is 453600, while the sum is 47.

The square root of 1145257949 is about 33841.6599622418. The cubic root of 1145257949 is about 1046.2475120688.

The spelling of 1145257949 in words is "one billion, one hundred forty-five million, two hundred fifty-seven thousand, nine hundred forty-nine".