1151963965 has 8 divisors (see below), whose sum is σ = 1383062328. Its totient is φ = 921100800.

The previous prime is 1151963929. The next prime is 1151963971. The reversal of 1151963965 is 5693691511.

It can be written as a sum of positive squares in 4 ways, for example, as 629658649 + 522305316 = 25093^2 + 22854^2 .

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

It is not a de Polignac number, because 1151963965 - 2¹¹ = 1151961917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47836 + ... + 67765.

It is an arithmetic number, because the mean of its divisors is an integer number (172882791).

Almost surely, 2^1151963965 is an apocalyptic number.

It is an amenable number.

1151963965 is a deficient number, since it is larger than the sum of its proper divisors (231098363).

1151963965 is a wasteful number, since it uses less digits than its factorization.

1151963965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117599.

The product of its digits is 218700, while the sum is 46.

The square root of 1151963965 is about 33940.5946471184. The cubic root of 1151963965 is about 1048.2856271973.

The spelling of 1151963965 in words is "one billion, one hundred fifty-one million, nine hundred sixty-three thousand, nine hundred sixty-five".