6451138 has 8 divisors (see below), whose sum is σ = 9698832. Its totient is φ = 3218196.

The previous prime is 6451121. The next prime is 6451139. The reversal of 6451138 is 8311546.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6451139) 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, 2520 + ... + 4387.

It is an arithmetic number, because the mean of its divisors is an integer number (1212354).

Almost surely, 2^6451138 is an apocalyptic number.

6451138 is a deficient number, since it is larger than the sum of its proper divisors (3247694).

6451138 is a wasteful number, since it uses less digits than its factorization.

6451138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376.

The product of its digits is 2880, while the sum is 28.

The square root of 6451138 is about 2539.9090534899. The cubic root of 6451138 is about 186.1567453519.

The spelling of 6451138 in words is "six million, four hundred fifty-one thousand, one hundred thirty-eight".