6437484391 has 16 divisors (see below), whose sum is σ = 7196289408. Its totient is φ = 5720486400.

The previous prime is 6437484379. The next prime is 6437484407. The reversal of 6437484391 is 1934847346.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6437484391 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 (6437484311) 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, 49090 + ... + 123631.

It is an arithmetic number, because the mean of its divisors is an integer number (449768088).

Almost surely, 2^6437484391 is an apocalyptic number.

6437484391 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6437484391 is a deficient number, since it is larger than the sum of its proper divisors (758805017).

6437484391 is a wasteful number, since it uses less digits than its factorization.

6437484391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172842.

The product of its digits is 1741824, while the sum is 49.

The square root of 6437484391 is about 80233.9354076565. The cubic root of 6437484391 is about 1860.2532116637.

The spelling of 6437484391 in words is "six billion, four hundred thirty-seven million, four hundred eighty-four thousand, three hundred ninety-one".