2657872534 has 4 divisors (see below), whose sum is σ = 3986808804. Its totient is φ = 1328936266.

The previous prime is 2657872507. The next prime is 2657872537. The reversal of 2657872534 is 4352787562.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2657872537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664468132 + ... + 664468135.

It is an arithmetic number, because the mean of its divisors is an integer number (996702201).

Almost surely, 2^2657872534 is an apocalyptic number.

2657872534 is a deficient number, since it is larger than the sum of its proper divisors (1328936270).

2657872534 is a wasteful number, since it uses less digits than its factorization.

2657872534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328936269.

The product of its digits is 2822400, while the sum is 49.

The square root of 2657872534 is about 51554.5588090908. The cubic root of 2657872534 is about 1385.1964921688.

The spelling of 2657872534 in words is "two billion, six hundred fifty-seven million, eight hundred seventy-two thousand, five hundred thirty-four".