84638156354 has 8 divisors (see below), whose sum is σ = 127691091900. Its totient is φ = 42074459056.

The previous prime is 84638156353. The next prime is 84638156381. The reversal of 84638156354 is 45365183648.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82515435025 + 2122721329 = 287255^2 + 46073^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×84638156354² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84638156296 and 84638156305.

It is not an unprimeable number, because it can be changed into a prime (84638156353) 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, 122309129 + ... + 122309820.

Almost surely, 2^84638156354 is an apocalyptic number.

84638156354 is a deficient number, since it is larger than the sum of its proper divisors (43052935546).

84638156354 is a wasteful number, since it uses less digits than its factorization.

84638156354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244619124.

The product of its digits is 8294400, while the sum is 53.

The spelling of 84638156354 in words is "eighty-four billion, six hundred thirty-eight million, one hundred fifty-six thousand, three hundred fifty-four".