1620414402 has 8 divisors (see below), whose sum is σ = 3240828816. Its totient is φ = 540138132.

The previous prime is 1620414359. The next prime is 1620414413. The reversal of 1620414402 is 2044140261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1620414402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135034528 + ... + 135034539.

It is an arithmetic number, because the mean of its divisors is an integer number (405103602).

Almost surely, 2^1620414402 is an apocalyptic number.

1620414402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1620414402 is a wasteful number, since it uses less digits than its factorization.

1620414402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270069072.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1620414402 is about 40254.3712160555. The cubic root of 1620414402 is about 1174.5604275770.

Adding to 1620414402 its reverse (2044140261), we get a palindrome (3664554663).

The spelling of 1620414402 in words is "one billion, six hundred twenty million, four hundred fourteen thousand, four hundred two".