1151326426 has 4 divisors (see below), whose sum is σ = 1726989642. Its totient is φ = 575663212.

The previous prime is 1151326409. The next prime is 1151326439. The reversal of 1151326426 is 6246231511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 830880625 + 320445801 = 28825^2 + 17901^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287831605 + ... + 287831608.

Almost surely, 2^1151326426 is an apocalyptic number.

1151326426 is a deficient number, since it is larger than the sum of its proper divisors (575663216).

1151326426 is an equidigital number, since it uses as much as digits as its factorization.

1151326426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575663215.

The product of its digits is 8640, while the sum is 31.

The square root of 1151326426 is about 33931.2013639364. The cubic root of 1151326426 is about 1048.0922049723.

Adding to 1151326426 its reverse (6246231511), we get a palindrome (7397557937).

The spelling of 1151326426 in words is "one billion, one hundred fifty-one million, three hundred twenty-six thousand, four hundred twenty-six".