1620339146 has 16 divisors (see below), whose sum is σ = 2450399040. Its totient is φ = 803563200.

The previous prime is 1620339143. The next prime is 1620339169. The reversal of 1620339146 is 6419330261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1620339143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137915 + ... + 149201.

It is an arithmetic number, because the mean of its divisors is an integer number (153149940).

Almost surely, 2^1620339146 is an apocalyptic number.

1620339146 is a deficient number, since it is larger than the sum of its proper divisors (830059894).

1620339146 is a wasteful number, since it uses less digits than its factorization.

1620339146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11869.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1620339146 is about 40253.4364495753. The cubic root of 1620339146 is about 1174.5422441445.

The spelling of 1620339146 in words is "one billion, six hundred twenty million, three hundred thirty-nine thousand, one hundred forty-six".