1153545320 has 32 divisors (see below), whose sum is σ = 2608669800. Its totient is φ = 459072768.

The previous prime is 1153545313. The next prime is 1153545377. The reversal of 1153545320 is 235453511.

It can be written as a sum of positive squares in 4 ways, for example, as 1139602564 + 13942756 = 33758^2 + 3734^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65315 + ... + 81074.

Almost surely, 2^1153545320 is an apocalyptic number.

1153545320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153545320 is an abundant number, since it is smaller than the sum of its proper divisors (1455124480).

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

1153545320 is a wasteful number, since it uses less digits than its factorization.

1153545320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146597 (or 146593 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1153545320 is about 33963.8825813540. The cubic root of 1153545320 is about 1048.7650848328.

Adding to 1153545320 its reverse (235453511), we get a palindrome (1388998831).

The spelling of 1153545320 in words is "one billion, one hundred fifty-three million, five hundred forty-five thousand, three hundred twenty".