1812622050 has 126 divisors (see below), whose sum is σ = 5077672497. Its totient is φ = 481198320.

The previous prime is 1812622027. The next prime is 1812622067. The reversal of 1812622050 is 502262181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1776369609 + 36252441 = 42147^2 + 6021^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30105.

It is a super-2 number, since 2×1812622050² = 6571197392292405000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 8128239 + ... + 8128461.

Almost surely, 2^1812622050 is an apocalyptic number.

1812622050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812622050

1812622050 is an abundant number, since it is smaller than the sum of its proper divisors (3265050447).

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

1812622050 is an frugal number, since it uses more digits than its factorization.

1812622050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1812622050 is about 42574.8992952420. The cubic root of 1812622050 is about 1219.2771069057.

The spelling of 1812622050 in words is "one billion, eight hundred twelve million, six hundred twenty-two thousand, fifty".