2154460643 has 8 divisors (see below), whose sum is σ = 2315242512. Its totient is φ = 1997462016.

The previous prime is 2154460621. The next prime is 2154460657. The reversal of 2154460643 is 3460644512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154460643 - 2⁸ = 2154460387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154460043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944630 + ... + 946907.

It is an arithmetic number, because the mean of its divisors is an integer number (289405314).

Almost surely, 2^2154460643 is an apocalyptic number.

2154460643 is a deficient number, since it is larger than the sum of its proper divisors (160781869).

2154460643 is a wasteful number, since it uses less digits than its factorization.

2154460643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891621.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 2154460643 is about 46416.1679051599. The cubic root of 2154460643 is about 1291.5548511259.

The spelling of 2154460643 in words is "two billion, one hundred fifty-four million, four hundred sixty thousand, six hundred forty-three".