1154220530 has 16 divisors (see below), whose sum is σ = 2100942360. Its totient is φ = 456500352.

The previous prime is 1154220499. The next prime is 1154220539. The reversal of 1154220530 is 350224511.

It can be written as a sum of positive squares in 4 ways, for example, as 464790481 + 689430049 = 21559^2 + 26257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1154220496 and 1154220505.

It is not an unprimeable number, because it can be changed into a prime (1154220539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647549 + ... + 649328.

Almost surely, 2^1154220530 is an apocalyptic number.

1154220530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1154220530 is a deficient number, since it is larger than the sum of its proper divisors (946721830).

1154220530 is a wasteful number, since it uses less digits than its factorization.

1154220530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296973.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1154220530 is about 33973.8212451882. The cubic root of 1154220530 is about 1048.9696710882.

The spelling of 1154220530 in words is "one billion, one hundred fifty-four million, two hundred twenty thousand, five hundred thirty".