213829456954 has 4 divisors (see below), whose sum is σ = 320744185434. Its totient is φ = 106914728476.

The previous prime is 213829456949. The next prime is 213829456987. The reversal of 213829456954 is 459654928312.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 133022866729 + 80806590225 = 364723^2 + 284265^2 .

It is a super-2 number, since 2×213829456954² (a number of 23 digits) contains 22 as substring.

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53457364237 + ... + 53457364240.

Almost surely, 2^213829456954 is an apocalyptic number.

213829456954 is a deficient number, since it is larger than the sum of its proper divisors (106914728480).

213829456954 is a wasteful number, since it uses less digits than its factorization.

213829456954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106914728479.

The product of its digits is 18662400, while the sum is 58.

The spelling of 213829456954 in words is "two hundred thirteen billion, eight hundred twenty-nine million, four hundred fifty-six thousand, nine hundred fifty-four".