1111155045 has 128 divisors (see below), whose sum is σ = 2443972608. Its totient is φ = 416102400.

The previous prime is 1111155043. The next prime is 1111155053. The reversal of 1111155045 is 5405511111.

It is not a de Polignac number, because 1111155045 - 2¹ = 1111155043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111155043) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 644785 + ... + 646505.

It is an arithmetic number, because the mean of its divisors is an integer number (19093536).

Almost surely, 2^1111155045 is an apocalyptic number.

1111155045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111155045 is an abundant number, since it is smaller than the sum of its proper divisors (1332817563).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111155045 is a wasteful number, since it uses less digits than its factorization.

1111155045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803.

The product of its (nonzero) digits is 500, while the sum is 24.

The square root of 1111155045 is about 33333.9923351524. The cubic root of 1111155045 is about 1035.7578197521.

Adding to 1111155045 its reverse (5405511111), we get a palindrome (6516666156).

The spelling of 1111155045 in words is "one billion, one hundred eleven million, one hundred fifty-five thousand, forty-five".