1151813811 has 8 divisors (see below), whose sum is σ = 1577258704. Its totient is φ = 747122400.

The previous prime is 1151813743. The next prime is 1151813813. The reversal of 1151813811 is 1183181511.

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

It is not a de Polignac number, because 1151813811 - 2²³ = 1143425203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151813813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5188240 + ... + 5188461.

It is an arithmetic number, because the mean of its divisors is an integer number (197157338).

Almost surely, 2^1151813811 is an apocalyptic number.

1151813811 is a deficient number, since it is larger than the sum of its proper divisors (425444893).

1151813811 is a wasteful number, since it uses less digits than its factorization.

1151813811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376741.

The product of its digits is 960, while the sum is 30.

The square root of 1151813811 is about 33938.3825631099. The cubic root of 1151813811 is about 1048.2400785736.

The spelling of 1151813811 in words is "one billion, one hundred fifty-one million, eight hundred thirteen thousand, eight hundred eleven".