1151951081 has 8 divisors (see below), whose sum is σ = 1188044160. Its totient is φ = 1116119088.

The previous prime is 1151951071. The next prime is 1151951089. The reversal of 1151951081 is 1801591511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151951081 - 2²⁶ = 1084842217 is a prime.

It is a super-2 number, since 2×1151951081² = 2653982586034137122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1151951089) 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 7 ways as a sum of consecutive naturals, for example, 56291 + ... + 73976.

It is an arithmetic number, because the mean of its divisors is an integer number (148505520).

Almost surely, 2^1151951081 is an apocalyptic number.

It is an amenable number.

1151951081 is a deficient number, since it is larger than the sum of its proper divisors (36093079).

1151951081 is a wasteful number, since it uses less digits than its factorization.

1151951081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130543.

The product of its (nonzero) digits is 1800, while the sum is 32.

The square root of 1151951081 is about 33940.4048443739. The cubic root of 1151951081 is about 1048.2817190420.

The spelling of 1151951081 in words is "one billion, one hundred fifty-one million, nine hundred fifty-one thousand, eighty-one".