7418019840 has 576 divisors, whose sum is σ = 30198873600. Its totient is φ = 1541406720.

The previous prime is 7418019803. The next prime is 7418019859. The reversal of 7418019840 is 489108147.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 7418019792 and 7418019801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 674365435 + ... + 674365445.

It is an arithmetic number, because the mean of its divisors is an integer number (52428600).

Almost surely, 2^7418019840 is an apocalyptic number.

7418019840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7418019840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15099436800).

7418019840 is an abundant number, since it is smaller than the sum of its proper divisors (22780853760).

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

7418019840 is an frugal number, since it uses more digits than its factorization.

7418019840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 7418019840 is about 86127.9271781227. The cubic root of 7418019840 is about 1950.2756428229.

The spelling of 7418019840 in words is "seven billion, four hundred eighteen million, nineteen thousand, eight hundred forty".