1620848194 has 16 divisors (see below), whose sum is σ = 2797001856. Its totient is φ = 690048000.

The previous prime is 1620848191. The next prime is 1620848209. The reversal of 1620848194 is 4918480261.

It is a self number, because there is not a number n which added to its sum of digits gives 1620848194.

It is not an unprimeable number, because it can be changed into a prime (1620848191) 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, 381247 + ... + 385474.

It is an arithmetic number, because the mean of its divisors is an integer number (174812616).

Almost surely, 2^1620848194 is an apocalyptic number.

1620848194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1620848194 is a deficient number, since it is larger than the sum of its proper divisors (1176153662).

1620848194 is a wasteful number, since it uses less digits than its factorization.

1620848194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766881.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1620848194 is about 40259.7589908335. The cubic root of 1620848194 is about 1174.6652298747.

The spelling of 1620848194 in words is "one billion, six hundred twenty million, eight hundred forty-eight thousand, one hundred ninety-four".