1151220430 has 16 divisors (see below), whose sum is σ = 2076924960. Its totient is φ = 459437472.

The previous prime is 1151220419. The next prime is 1151220437. The reversal of 1151220430 is 340221511.

It is a junction number, because it is equal to n+sod(n) for n = 1151220398 and 1151220407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151220437) 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, 126729 + ... + 135508.

It is an arithmetic number, because the mean of its divisors is an integer number (129807810).

Almost surely, 2^1151220430 is an apocalyptic number.

1151220430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1151220430 is a deficient number, since it is larger than the sum of its proper divisors (925704530).

1151220430 is a wasteful number, since it uses less digits than its factorization.

1151220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262683.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1151220430 is about 33929.6394027405. The cubic root of 1151220430 is about 1048.0600400455.

Adding to 1151220430 its reverse (340221511), we get a palindrome (1491441941).

The spelling of 1151220430 in words is "one billion, one hundred fifty-one million, two hundred twenty thousand, four hundred thirty".