1145623539 has 8 divisors (see below), whose sum is σ = 1535496192. Its totient is φ = 759749960.

The previous prime is 1145623499. The next prime is 1145623541. The reversal of 1145623539 is 9353265411.

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 1145623539 - 2¹³ = 1145615347 is a prime.

It is a super-2 number, since 2×1145623539² = 2624906586221769042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145623497 and 1145623506.

It is not an unprimeable number, because it can be changed into a prime (1145623939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999099 + ... + 1000244.

It is an arithmetic number, because the mean of its divisors is an integer number (191937024).

Almost surely, 2^1145623539 is an apocalyptic number.

1145623539 is a deficient number, since it is larger than the sum of its proper divisors (389872653).

1145623539 is a wasteful number, since it uses less digits than its factorization.

1145623539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999537.

The product of its digits is 97200, while the sum is 39.

The square root of 1145623539 is about 33847.0610097834. The cubic root of 1145623539 is about 1046.3588281658.

The spelling of 1145623539 in words is "one billion, one hundred forty-five million, six hundred twenty-three thousand, five hundred thirty-nine".