6138623461 has 4 divisors (see below), whose sum is σ = 6140154124. Its totient is φ = 6137092800.

The previous prime is 6138623453. The next prime is 6138623473. The reversal of 6138623461 is 1643268316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 262634436 + 5875989025 = 16206^2 + 76655^2 .

It is a cyclic number.

It is not a de Polignac number, because 6138623461 - 2³ = 6138623453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138623411) 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, 759300 + ... + 767341.

It is an arithmetic number, because the mean of its divisors is an integer number (1535038531).

Almost surely, 2^6138623461 is an apocalyptic number.

It is an amenable number.

6138623461 is a deficient number, since it is larger than the sum of its proper divisors (1530663).

6138623461 is a wasteful number, since it uses less digits than its factorization.

6138623461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530662.

The product of its digits is 124416, while the sum is 40.

The square root of 6138623461 is about 78349.3679680953. The cubic root of 6138623461 is about 1831.0083786310.

The spelling of 6138623461 in words is "six billion, one hundred thirty-eight million, six hundred twenty-three thousand, four hundred sixty-one".