6458278940 has 12 divisors (see below), whose sum is σ = 13562385816. Its totient is φ = 2583311568.

The previous prime is 6458278913. The next prime is 6458278963. The reversal of 6458278940 is 498728546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161456954 + ... + 161456993.

It is an arithmetic number, because the mean of its divisors is an integer number (1130198818).

Almost surely, 2^6458278940 is an apocalyptic number.

It is an amenable number.

6458278940 is an abundant number, since it is smaller than the sum of its proper divisors (7104106876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6458278940 is a wasteful number, since it uses less digits than its factorization.

6458278940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322913956 (or 322913954 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The square root of 6458278940 is about 80363.4179213403. The cubic root of 6458278940 is about 1862.2540734402.

The spelling of 6458278940 in words is "six billion, four hundred fifty-eight million, two hundred seventy-eight thousand, nine hundred forty".