1151515139 has 4 divisors (see below), whose sum is σ = 1166091360. Its totient is φ = 1136938920.

The previous prime is 1151515129. The next prime is 1151515187. The reversal of 1151515139 is 9315151511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315151511 = 47 ⋅198194713.

It is a cyclic number.

It is not a de Polignac number, because 1151515139 - 2⁸ = 1151514883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151515109) 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, 7287992 + ... + 7288149.

It is an arithmetic number, because the mean of its divisors is an integer number (291522840).

Almost surely, 2^1151515139 is an apocalyptic number.

1151515139 is a deficient number, since it is larger than the sum of its proper divisors (14576221).

1151515139 is an equidigital number, since it uses as much as digits as its factorization.

1151515139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14576220.

The product of its digits is 3375, while the sum is 32.

The square root of 1151515139 is about 33933.9820681275. The cubic root of 1151515139 is about 1048.1494658308.

The spelling of 1151515139 in words is "one billion, one hundred fifty-one million, five hundred fifteen thousand, one hundred thirty-nine".