2657534478 has 8 divisors (see below), whose sum is σ = 5315068968. Its totient is φ = 885844824.

The previous prime is 2657534441. The next prime is 2657534501. The reversal of 2657534478 is 8744357562.

It is a happy number.

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

2657534478 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2657534478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221461201 + ... + 221461212.

It is an arithmetic number, because the mean of its divisors is an integer number (664383621).

Almost surely, 2^2657534478 is an apocalyptic number.

2657534478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2657534478 is a wasteful number, since it uses less digits than its factorization.

2657534478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442922418.

The product of its digits is 5644800, while the sum is 51.

The square root of 2657534478 is about 51551.2800810998. The cubic root of 2657534478 is about 1385.1377617576.

The spelling of 2657534478 in words is "two billion, six hundred fifty-seven million, five hundred thirty-four thousand, four hundred seventy-eight".