4642154549 has 4 divisors (see below), whose sum is σ = 4655532864. Its totient is φ = 4628776236.

The previous prime is 4642154527. The next prime is 4642154557. The reversal of 4642154549 is 9454512464.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4642154549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4642154509) 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, 6688637 + ... + 6689330.

It is an arithmetic number, because the mean of its divisors is an integer number (1163883216).

Almost surely, 2^4642154549 is an apocalyptic number.

It is an amenable number.

4642154549 is a deficient number, since it is larger than the sum of its proper divisors (13378315).

4642154549 is a wasteful number, since it uses less digits than its factorization.

4642154549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13378314.

The product of its digits is 691200, while the sum is 44.

The square root of 4642154549 is about 68133.3585624546. The cubic root of 4642154549 is about 1668.1683036366.

The spelling of 4642154549 in words is "four billion, six hundred forty-two million, one hundred fifty-four thousand, five hundred forty-nine".