1620273196 has 24 divisors (see below), whose sum is σ = 3072096720. Its totient is φ = 744748032.

The previous prime is 1620273191. The next prime is 1620273199. The reversal of 1620273196 is 6913720261.

It is not an unprimeable number, because it can be changed into a prime (1620273191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274141 + ... + 279988.

It is an arithmetic number, because the mean of its divisors is an integer number (128004030).

Almost surely, 2^1620273196 is an apocalyptic number.

It is an amenable number.

1620273196 is a deficient number, since it is larger than the sum of its proper divisors (1451823524).

1620273196 is a wasteful number, since it uses less digits than its factorization.

1620273196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554193 (or 554191 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1620273196 is about 40252.6172565213. The cubic root of 1620273196 is about 1174.5263087744.

It can be divided in two parts, 16202 and 73196, that added together give a palindrome (89398).

The spelling of 1620273196 in words is "one billion, six hundred twenty million, two hundred seventy-three thousand, one hundred ninety-six".