147831638449 has 4 divisors (see below), whose sum is σ = 161270878320. Its totient is φ = 134392398580.

The previous prime is 147831638417. The next prime is 147831638467. The reversal of 147831638449 is 944836138741.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 147831638449 - 2⁵ = 147831638417 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147831638393 and 147831638402.

It is not an unprimeable number, because it can be changed into a prime (147831630449) 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, 6719619919 + ... + 6719619940.

It is an arithmetic number, because the mean of its divisors is an integer number (40317719580).

Almost surely, 2^147831638449 is an apocalyptic number.

It is an amenable number.

147831638449 is a deficient number, since it is larger than the sum of its proper divisors (13439239871).

147831638449 is a wasteful number, since it uses less digits than its factorization.

147831638449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439239870.

The product of its digits is 13934592, while the sum is 58.

The spelling of 147831638449 in words is "one hundred forty-seven billion, eight hundred thirty-one million, six hundred thirty-eight thousand, four hundred forty-nine".