2164056457 has 8 divisors (see below), whose sum is σ = 2230886880. Its totient is φ = 2098231200.

The previous prime is 2164056439. The next prime is 2164056469. The reversal of 2164056457 is 7546504612.

It is a happy number.

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 2164056457 - 2¹⁹ = 2163532169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2164056437) 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, 246919 + ... + 255532.

It is an arithmetic number, because the mean of its divisors is an integer number (278860860).

Almost surely, 2^2164056457 is an apocalyptic number.

It is an amenable number.

2164056457 is a deficient number, since it is larger than the sum of its proper divisors (66830423).

2164056457 is an equidigital number, since it uses as much as digits as its factorization.

2164056457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502583.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2164056457 is about 46519.4202134979. The cubic root of 2164056457 is about 1293.4695090714.

The spelling of 2164056457 in words is "two billion, one hundred sixty-four million, fifty-six thousand, four hundred fifty-seven".