1620000126 has 24 divisors (see below), whose sum is σ = 3514119960. Its totient is φ = 539366256.

The previous prime is 1620000061. The next prime is 1620000127. The reversal of 1620000126 is 6210000261.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1620000099 and 1620000108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620000127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36925 + ... + 67848.

It is an arithmetic number, because the mean of its divisors is an integer number (146421665).

Almost surely, 2^1620000126 is an apocalyptic number.

1620000126 is an abundant number, since it is smaller than the sum of its proper divisors (1894119834).

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

1620000126 is a wasteful number, since it uses less digits than its factorization.

1620000126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105640 (or 105637 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1620000126 is about 40249.2251602438. The cubic root of 1620000126 is about 1174.4603227996.

Adding to 1620000126 its reverse (6210000261), we get a palindrome (7830000387).

The spelling of 1620000126 in words is "one billion, six hundred twenty million, one hundred twenty-six", and thus it is an aban number.