1155145303 has 16 divisors (see below), whose sum is σ = 1256040576. Its totient is φ = 1056019680.

The previous prime is 1155145283. The next prime is 1155145331. The reversal of 1155145303 is 3035415511.

It is a cyclic number.

It is not a de Polignac number, because 1155145303 - 2¹³ = 1155137111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155145333) 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, 734508 + ... + 736078.

It is an arithmetic number, because the mean of its divisors is an integer number (78502536).

Almost surely, 2^1155145303 is an apocalyptic number.

1155145303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1155145303 is a deficient number, since it is larger than the sum of its proper divisors (100895273).

1155145303 is a wasteful number, since it uses less digits than its factorization.

1155145303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1155145303 is about 33987.4286023524. The cubic root of 1155145303 is about 1049.2497446230.

The spelling of 1155145303 in words is "one billion, one hundred fifty-five million, one hundred forty-five thousand, three hundred three".