1620134302 has 4 divisors (see below), whose sum is σ = 2430201456. Its totient is φ = 810067150.

The previous prime is 1620134297. The next prime is 1620134317. The reversal of 1620134302 is 2034310261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2034310261 = 149 ⋅13653089.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 405033574 + ... + 405033577.

It is an arithmetic number, because the mean of its divisors is an integer number (607550364).

Almost surely, 2^1620134302 is an apocalyptic number.

1620134302 is a deficient number, since it is larger than the sum of its proper divisors (810067154).

1620134302 is an equidigital number, since it uses as much as digits as its factorization.

1620134302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810067153.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1620134302 is about 40250.8919404279. The cubic root of 1620134302 is about 1174.4927466732.

Adding to 1620134302 its reverse (2034310261), we get a palindrome (3654444563).

The spelling of 1620134302 in words is "one billion, six hundred twenty million, one hundred thirty-four thousand, three hundred two".