1620040602 has 32 divisors (see below), whose sum is σ = 3432435264. Its totient is φ = 507987200.

The previous prime is 1620040579. The next prime is 1620040607. The reversal of 1620040602 is 2060400261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1620040607) 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 15 ways as a sum of consecutive naturals, for example, 326077 + ... + 331007.

It is an arithmetic number, because the mean of its divisors is an integer number (107263602).

Almost surely, 2^1620040602 is an apocalyptic number.

1620040602 is an abundant number, since it is smaller than the sum of its proper divisors (1812394662).

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

1620040602 is a wasteful number, since it uses less digits than its factorization.

1620040602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8174.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1620040602 is about 40249.7279742360. The cubic root of 1620040602 is about 1174.4701040870.

Adding to 1620040602 its reverse (2060400261), we get a palindrome (3680440863).

The spelling of 1620040602 in words is "one billion, six hundred twenty million, forty thousand, six hundred two".