2538450461 has 4 divisors (see below), whose sum is σ = 2538551772. Its totient is φ = 2538349152.

The previous prime is 2538450457. The next prime is 2538450463. The reversal of 2538450461 is 1640548352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 524684836 + 2013765625 = 22906^2 + 44875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2538450461 - 2² = 2538450457 is a prime.

It is a super-2 number, since 2×2538450461² = 12887461485902225042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538450463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17465 + ... + 73361.

It is an arithmetic number, because the mean of its divisors is an integer number (634637943).

Almost surely, 2^2538450461 is an apocalyptic number.

It is an amenable number.

2538450461 is a deficient number, since it is larger than the sum of its proper divisors (101311).

2538450461 is an equidigital number, since it uses as much as digits as its factorization.

2538450461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101310.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 2538450461 is about 50383.0374332473. The cubic root of 2538450461 is about 1364.1314786059.

The spelling of 2538450461 in words is "two billion, five hundred thirty-eight million, four hundred fifty thousand, four hundred sixty-one".