1151720338 has 8 divisors (see below), whose sum is σ = 1730400588. Its totient is φ = 574920144.

The previous prime is 1151720333. The next prime is 1151720341. The reversal of 1151720338 is 8330271511.

It can be written as a sum of positive squares in 2 ways, for example, as 889053489 + 262666849 = 29817^2 + 16207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1151720333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468481 + ... + 470932.

Almost surely, 2^1151720338 is an apocalyptic number.

1151720338 is a deficient number, since it is larger than the sum of its proper divisors (578680250).

1151720338 is an equidigital number, since it uses as much as digits as its factorization.

1151720338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940028.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1151720338 is about 33937.0054365437. The cubic root of 1151720338 is about 1048.2117219085.

Adding to 1151720338 its reverse (8330271511), we get a palindrome (9481991849).

The spelling of 1151720338 in words is "one billion, one hundred fifty-one million, seven hundred twenty thousand, three hundred thirty-eight".