1812948384 has 192 divisors, whose sum is σ = 5455416960. Its totient is φ = 522547200.

The previous prime is 1812948367. The next prime is 1812948409. The reversal of 1812948384 is 4838492181.

It is a happy number.

It is a super-2 number, since 2×1812948384² = 6573563686096422912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 2394534 + ... + 2395290.

It is an arithmetic number, because the mean of its divisors is an integer number (28413630).

Almost surely, 2^1812948384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812948384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2727708480).

1812948384 is an abundant number, since it is smaller than the sum of its proper divisors (3642468576).

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

1812948384 is a wasteful number, since it uses less digits than its factorization.

1812948384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 895 counting only the distinct ones).

The product of its digits is 442368, while the sum is 48.

The square root of 1812948384 is about 42578.7315921928. The cubic root of 1812948384 is about 1219.3502730501.

The spelling of 1812948384 in words is "one billion, eight hundred twelve million, nine hundred forty-eight thousand, three hundred eighty-four".