2538955557 has 16 divisors (see below), whose sum is σ = 3841447680. Its totient is φ = 1656622656.

The previous prime is 2538955537. The next prime is 2538955561. The reversal of 2538955557 is 7555598352.

2538955557 is a `hidden beast` number, since 2 + 5 + 3 + 89 + 5 + 5 + 557 = 666.

2538955557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2538955557 - 2¹⁴ = 2538939173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538955537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999108 + ... + 1001645.

It is an arithmetic number, because the mean of its divisors is an integer number (240090480).

Almost surely, 2^2538955557 is an apocalyptic number.

2538955557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2538955557 is a deficient number, since it is larger than the sum of its proper divisors (1302492123).

2538955557 is a wasteful number, since it uses less digits than its factorization.

2538955557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000809 (or 2000803 counting only the distinct ones).

The product of its digits is 9450000, while the sum is 54.

The square root of 2538955557 is about 50388.0497439621. The cubic root of 2538955557 is about 1364.2219500265.

The spelling of 2538955557 in words is "two billion, five hundred thirty-eight million, nine hundred fifty-five thousand, five hundred fifty-seven".