195226061820 has 24 divisors (see below), whose sum is σ = 546632973264. Its totient is φ = 52060283136.

The previous prime is 195226061819. The next prime is 195226061909. The reversal of 195226061820 is 28160622591.

It is a super-2 number, since 2×195226061820² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1626883789 + ... + 1626883908.

It is an arithmetic number, because the mean of its divisors is an integer number (22776373886).

Almost surely, 2^195226061820 is an apocalyptic number.

195226061820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195226061820 is an abundant number, since it is smaller than the sum of its proper divisors (351406911444).

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

195226061820 is a wasteful number, since it uses less digits than its factorization.

195226061820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253767709 (or 3253767707 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 195226061820 in words is "one hundred ninety-five billion, two hundred twenty-six million, sixty-one thousand, eight hundred twenty".