1825818240 has 64 divisors (see below), whose sum is σ = 5819801760. Its totient is φ = 486884352.

The previous prime is 1825818233. The next prime is 1825818263. The reversal of 1825818240 is 428185281.

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

It is a super-2 number, since 2×1825818240² = 6667224491033395200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473554 + ... + 477393.

Almost surely, 2^1825818240 is an apocalyptic number.

1825818240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1825818240 is an abundant number, since it is smaller than the sum of its proper divisors (3993983520).

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

1825818240 is an equidigital number, since it uses as much as digits as its factorization.

1825818240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950969 (or 950957 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 39.

The square root of 1825818240 is about 42729.5944282180. The cubic root of 1825818240 is about 1222.2288022174.

The spelling of 1825818240 in words is "one billion, eight hundred twenty-five million, eight hundred eighteen thousand, two hundred forty".