1151422618 has 4 divisors (see below), whose sum is σ = 1727133930. Its totient is φ = 575711308.

The previous prime is 1151422579. The next prime is 1151422633. The reversal of 1151422618 is 8162241511.

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., 859251969 + 292170649 = 29313^2 + 17093^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1151422618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287855653 + ... + 287855656.

Almost surely, 2^1151422618 is an apocalyptic number.

1151422618 is a deficient number, since it is larger than the sum of its proper divisors (575711312).

1151422618 is an equidigital number, since it uses as much as digits as its factorization.

1151422618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575711311.

The product of its digits is 3840, while the sum is 31.

The square root of 1151422618 is about 33932.6187907742. The cubic root of 1151422618 is about 1048.1213931259.

The spelling of 1151422618 in words is "one billion, one hundred fifty-one million, four hundred twenty-two thousand, six hundred eighteen".