7148249840 has 40 divisors (see below), whose sum is σ = 16665034560. Its totient is φ = 2851497216.

The previous prime is 7148249839. The next prime is 7148249909. The reversal of 7148249840 is 489428417.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92375 + ... + 151094.

It is an arithmetic number, because the mean of its divisors is an integer number (416625864).

Almost surely, 2^7148249840 is an apocalyptic number.

It is an amenable number.

7148249840 is an abundant number, since it is smaller than the sum of its proper divisors (9516784720).

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

7148249840 is a wasteful number, since it uses less digits than its factorization.

7148249840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243849 (or 243843 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 7148249840 is about 84547.3230800361. The cubic root of 7148249840 is about 1926.3413232142.

The spelling of 7148249840 in words is "seven billion, one hundred forty-eight million, two hundred forty-nine thousand, eight hundred forty".