1918995480 has 192 divisors, whose sum is σ = 6469182720. Its totient is φ = 492825600.

The previous prime is 1918995461. The next prime is 1918995509. The reversal of 1918995480 is 845998191.

1918995480 is a `hidden beast` number, since 1 + 9 + 1 + 8 + 99 + 548 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4162450 + ... + 4162910.

It is an arithmetic number, because the mean of its divisors is an integer number (33693660).

Almost surely, 2^1918995480 is an apocalyptic number.

1918995480 is a gapful number since it is divisible by the number (10) 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 1918995480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3234591360).

1918995480 is an abundant number, since it is smaller than the sum of its proper divisors (4550187240).

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

1918995480 is a wasteful number, since it uses less digits than its factorization.

1918995480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The square root of 1918995480 is about 43806.3406369443. The cubic root of 1918995480 is about 1242.6762092084.

The spelling of 1918995480 in words is "one billion, nine hundred eighteen million, nine hundred ninety-five thousand, four hundred eighty".