2538191505 has 32 divisors (see below), whose sum is σ = 4272393600. Its totient is φ = 1284856832.

The previous prime is 2538191503. The next prime is 2538191507. The reversal of 2538191505 is 5051918352.

2538191505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2538191503) and next prime (2538191507).

It is not a de Polignac number, because 2538191505 - 2¹ = 2538191503 is a prime.

It is a super-2 number, since 2×2538191505² = 12884832232108330050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2538191503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23784 + ... + 75113.

It is an arithmetic number, because the mean of its divisors is an integer number (133512300).

Almost surely, 2^2538191505 is an apocalyptic number.

It is an amenable number.

2538191505 is a deficient number, since it is larger than the sum of its proper divisors (1734202095).

2538191505 is a wasteful number, since it uses less digits than its factorization.

2538191505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98993.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 2538191505 is about 50380.4674948536. The cubic root of 2538191505 is about 1364.0850904583.

It can be divided in two parts, 25381 and 91505, that added together give a triangular number (116886 = T₄₈₃).

The spelling of 2538191505 in words is "two billion, five hundred thirty-eight million, one hundred ninety-one thousand, five hundred five".