1151521434 has 40 divisors (see below), whose sum is σ = 2948872608. Its totient is φ = 329005800.

The previous prime is 1151521433. The next prime is 1151521439. The reversal of 1151521434 is 4341251511.

1151521434 is a `hidden beast` number, since 1 + 1 + 515 + 2 + 143 + 4 = 666.

It is a super-2 number, since 2×1151521434² = 2652003225922832712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1151521398 and 1151521407.

It is not an unprimeable number, because it can be changed into a prime (1151521433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 506592 + ... + 508859.

Almost surely, 2^1151521434 is an apocalyptic number.

1151521434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1151521434 is an abundant number, since it is smaller than the sum of its proper divisors (1797351174).

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

1151521434 is a wasteful number, since it uses less digits than its factorization.

1151521434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015472 (or 1015463 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1151521434 is about 33934.0748216302. The cubic root of 1151521434 is about 1048.1513758039.

Adding to 1151521434 its reverse (4341251511), we get a palindrome (5492772945).

The spelling of 1151521434 in words is "one billion, one hundred fifty-one million, five hundred twenty-one thousand, four hundred thirty-four".