1155135345 has 64 divisors (see below), whose sum is σ = 2312185344. Its totient is φ = 479416320.

The previous prime is 1155135341. The next prime is 1155135379. The reversal of 1155135345 is 5435315511.

It is not a de Polignac number, because 1155135345 - 2² = 1155135341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155135341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76329 + ... + 90201.

It is an arithmetic number, because the mean of its divisors is an integer number (36127896).

Almost surely, 2^1155135345 is an apocalyptic number.

1155135345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155135345 is an abundant number, since it is smaller than the sum of its proper divisors (1157049999).

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

1155135345 is a wasteful number, since it uses less digits than its factorization.

1155135345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13962.

The product of its digits is 22500, while the sum is 33.

The square root of 1155135345 is about 33987.2821066940. The cubic root of 1155135345 is about 1049.2467295740.

The spelling of 1155135345 in words is "one billion, one hundred fifty-five million, one hundred thirty-five thousand, three hundred forty-five".