1845538680 has 32 divisors (see below), whose sum is σ = 5536616400. Its totient is φ = 492143616.

The previous prime is 1845538679. The next prime is 1845538687. The reversal of 1845538680 is 868355481.

It is a super-2 number, since 2×1845538680² = 6812026038752284800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845538687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7689625 + ... + 7689864.

Almost surely, 2^1845538680 is an apocalyptic number.

1845538680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845538680 is an abundant number, since it is smaller than the sum of its proper divisors (3691077720).

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

1845538680 is a wasteful number, since it uses less digits than its factorization.

1845538680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15379503 (or 15379499 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The square root of 1845538680 is about 42959.7332393952. The cubic root of 1845538680 is about 1226.6134353213.

The spelling of 1845538680 in words is "one billion, eight hundred forty-five million, five hundred thirty-eight thousand, six hundred eighty".