1115409845 has 16 divisors (see below), whose sum is σ = 1465620480. Its totient is φ = 808180800.

The previous prime is 1115409833. The next prime is 1115409847. The reversal of 1115409845 is 5489045111.

It is a happy number.

It is not a de Polignac number, because 1115409845 - 2²² = 1111215541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1115409799 and 1115409808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115409847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22901 + ... + 52490.

It is an arithmetic number, because the mean of its divisors is an integer number (91601280).

Almost surely, 2^1115409845 is an apocalyptic number.

It is an amenable number.

1115409845 is a deficient number, since it is larger than the sum of its proper divisors (350210635).

1115409845 is a wasteful number, since it uses less digits than its factorization.

1115409845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75676.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1115409845 is about 33397.7520950138. The cubic root of 1115409845 is about 1037.0781663446.

The spelling of 1115409845 in words is "one billion, one hundred fifteen million, four hundred nine thousand, eight hundred forty-five".