1151051511 has 4 divisors (see below), whose sum is σ = 1534735352. Its totient is φ = 767367672.

The previous prime is 1151051501. The next prime is 1151051513. The reversal of 1151051511 is 1151501511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1151051511 - 2¹⁰ = 1151050487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151051513) 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, 191841916 + ... + 191841921.

It is an arithmetic number, because the mean of its divisors is an integer number (383683838).

Almost surely, 2^1151051511 is an apocalyptic number.

1151051511 is a deficient number, since it is larger than the sum of its proper divisors (383683841).

1151051511 is an equidigital number, since it uses as much as digits as its factorization.

1151051511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383683840.

The product of its (nonzero) digits is 125, while the sum is 21.

The square root of 1151051511 is about 33927.1500571445. The cubic root of 1151051511 is about 1048.0087767922.

The spelling of 1151051511 in words is "one billion, one hundred fifty-one million, fifty-one thousand, five hundred eleven".