1151921847 has 8 divisors (see below), whose sum is σ = 1588857840. Its totient is φ = 741466880.

The previous prime is 1151921801. The next prime is 1151921863. The reversal of 1151921847 is 7481291511.

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 1151921847 - 2⁶ = 1151921783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151921647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6620154 + ... + 6620327.

It is an arithmetic number, because the mean of its divisors is an integer number (198607230).

Almost surely, 2^1151921847 is an apocalyptic number.

1151921847 is a deficient number, since it is larger than the sum of its proper divisors (436935993).

1151921847 is a wasteful number, since it uses less digits than its factorization.

1151921847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13240513.

The product of its digits is 20160, while the sum is 39.

The square root of 1151921847 is about 33939.9741750049. The cubic root of 1151921847 is about 1048.2728512676.

The spelling of 1151921847 in words is "one billion, one hundred fifty-one million, nine hundred twenty-one thousand, eight hundred forty-seven".