7198451840 has 64 divisors (see below), whose sum is σ = 17219329920. Its totient is φ = 2877619200.

The previous prime is 7198451807. The next prime is 7198451849. The reversal of 7198451840 is 481548917.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (7198451849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1707335 + ... + 1711545.

It is an arithmetic number, because the mean of its divisors is an integer number (269052030).

Almost surely, 2^7198451840 is an apocalyptic number.

It is an amenable number.

7198451840 is an abundant number, since it is smaller than the sum of its proper divisors (10020878080).

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

7198451840 is a wasteful number, since it uses less digits than its factorization.

7198451840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6901 (or 6889 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 7198451840 is about 84843.6906316551. The cubic root of 7198451840 is about 1930.8403581750.

The spelling of 7198451840 in words is "seven billion, one hundred ninety-eight million, four hundred fifty-one thousand, eight hundred forty".