1145919 has 8 divisors (see below), whose sum is σ = 1617840. Its totient is φ = 718976.

The previous prime is 1145899. The next prime is 1145971. The reversal of 1145919 is 9195411.

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 1145919 - 2¹⁶ = 1080383 is a prime.

It is a super-2 number, since 2×1145919² = 2626260709122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145999) 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 7 ways as a sum of consecutive naturals, for example, 11184 + ... + 11285.

It is an arithmetic number, because the mean of its divisors is an integer number (202230).

2^1145919 is an apocalyptic number.

1145919 is a deficient number, since it is larger than the sum of its proper divisors (471921).

1145919 is a wasteful number, since it uses less digits than its factorization.

1145919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22489.

The product of its digits is 1620, while the sum is 30.

The square root of 1145919 is about 1070.4760623199. The cubic root of 1145919 is about 104.6448773842.

The spelling of 1145919 in words is "one million, one hundred forty-five thousand, nine hundred nineteen".