1804861464 has 128 divisors (see below), whose sum is σ = 5256576000. Its totient is φ = 505774080.

The previous prime is 1804861463. The next prime is 1804861483. The reversal of 1804861464 is 4641684081.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804861463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4019512 + ... + 4019960.

It is an arithmetic number, because the mean of its divisors is an integer number (41067000).

Almost surely, 2^1804861464 is an apocalyptic number.

1804861464 is a gapful number since it is divisible by the number (14) 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 1804861464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2628288000).

1804861464 is an abundant number, since it is smaller than the sum of its proper divisors (3451714536).

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

1804861464 is a wasteful number, since it uses less digits than its factorization.

1804861464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 1804861464 is about 42483.6611416672. The cubic root of 1804861464 is about 1217.5345408306.

The spelling of 1804861464 in words is "one billion, eight hundred four million, eight hundred sixty-one thousand, four hundred sixty-four".