1806022740 has 48 divisors (see below), whose sum is σ = 5128099200. Its totient is φ = 474821760.

The previous prime is 1806022739. The next prime is 1806022741. The reversal of 1806022740 is 472206081.

It is an interprime number because it is at equal distance from previous prime (1806022739) and next prime (1806022741).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1806022698 and 1806022707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806022741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207715 + ... + 216234.

It is an arithmetic number, because the mean of its divisors is an integer number (106835400).

Almost surely, 2^1806022740 is an apocalyptic number.

1806022740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1806022740 is an abundant number, since it is smaller than the sum of its proper divisors (3322076460).

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

1806022740 is a wasteful number, since it uses less digits than its factorization.

1806022740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424032 (or 424030 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1806022740 is about 42497.3262688372. The cubic root of 1806022740 is about 1217.7956117471.

The spelling of 1806022740 in words is "one billion, eight hundred six million, twenty-two thousand, seven hundred forty".