1151137487 has 4 divisors (see below), whose sum is σ = 1155293496. Its totient is φ = 1146981480.

The previous prime is 1151137483. The next prime is 1151137531. The reversal of 1151137487 is 7847311511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151137487 - 2² = 1151137483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1151137487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151137483) 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, 2077589 + ... + 2078142.

It is an arithmetic number, because the mean of its divisors is an integer number (288823374).

Almost surely, 2^1151137487 is an apocalyptic number.

1151137487 is a deficient number, since it is larger than the sum of its proper divisors (4156009).

1151137487 is an equidigital number, since it uses as much as digits as its factorization.

1151137487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156008.

The product of its digits is 23520, while the sum is 38.

The square root of 1151137487 is about 33928.4171013031. The cubic root of 1151137487 is about 1048.0348692703.

Adding to 1151137487 its reverse (7847311511), we get a palindrome (8998448998).

The spelling of 1151137487 in words is "one billion, one hundred fifty-one million, one hundred thirty-seven thousand, four hundred eighty-seven".