147981867 has 32 divisors (see below), whose sum is σ = 225020160. Its totient is φ = 85680000.

The previous prime is 147981863. The next prime is 147981881. The reversal of 147981867 is 768189741.

It is not a de Polignac number, because 147981867 - 2² = 147981863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147981863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95892 + ... + 97422.

It is an arithmetic number, because the mean of its divisors is an integer number (7031880).

Almost surely, 2^147981867 is an apocalyptic number.

147981867 is a deficient number, since it is larger than the sum of its proper divisors (77038293).

147981867 is a wasteful number, since it uses less digits than its factorization.

147981867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its digits is 677376, while the sum is 51.

The square root of 147981867 is about 12164.7797760584. The cubic root of 147981867 is about 528.9356437255.

The spelling of 147981867 in words is "one hundred forty-seven million, nine hundred eighty-one thousand, eight hundred sixty-seven".