1801920196 has 24 divisors (see below), whose sum is σ = 3202569216. Its totient is φ = 887009760.

The previous prime is 1801920187. The next prime is 1801920199. The reversal of 1801920196 is 6910291081.

It is not an unprimeable number, because it can be changed into a prime (1801920199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53010 + ... + 80086.

It is an arithmetic number, because the mean of its divisors is an integer number (133440384).

Almost surely, 2^1801920196 is an apocalyptic number.

It is an amenable number.

1801920196 is a deficient number, since it is larger than the sum of its proper divisors (1400649020).

1801920196 is a wasteful number, since it uses less digits than its factorization.

1801920196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27339 (or 27337 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 1801920196 is about 42449.0305660801. The cubic root of 1801920196 is about 1216.8728016865.

The spelling of 1801920196 in words is "one billion, eight hundred one million, nine hundred twenty thousand, one hundred ninety-six".