4154979645 has 30 divisors (see below), whose sum is σ = 7450511838. Its totient is φ = 2215297296.

The previous prime is 4154979637. The next prime is 4154979659. The reversal of 4154979645 is 5469794514.

4154979645 is a `hidden beast` number, since 4 + 1 + 549 + 7 + 96 + 4 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3323983716 + 830995929 = 57654^2 + 28827^2 .

It is not a de Polignac number, because 4154979645 - 2³ = 4154979637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4154979591 and 4154979600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1295614 + ... + 1298816.

Almost surely, 2^4154979645 is an apocalyptic number.

4154979645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4154979645 is a deficient number, since it is larger than the sum of its proper divisors (3295532193).

4154979645 is an frugal number, since it uses more digits than its factorization.

4154979645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6423 (or 3211 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 4154979645 is about 64459.1315873864. The cubic root of 4154979645 is about 1607.6430727893.

The spelling of 4154979645 in words is "four billion, one hundred fifty-four million, nine hundred seventy-nine thousand, six hundred forty-five".