1620873332 has 24 divisors (see below), whose sum is σ = 3056607456. Its totient is φ = 747633888.

The previous prime is 1620873263. The next prime is 1620873341. The reversal of 1620873332 is 2333780261.

It is a junction number, because it is equal to n+sod(n) for n = 1620873292 and 1620873301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84203 + ... + 101645.

It is an arithmetic number, because the mean of its divisors is an integer number (127358644).

Almost surely, 2^1620873332 is an apocalyptic number.

It is an amenable number.

1620873332 is a deficient number, since it is larger than the sum of its proper divisors (1435734124).

1620873332 is a wasteful number, since it uses less digits than its factorization.

1620873332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19247 (or 19245 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 1620873332 is about 40260.0711872197. The cubic root of 1620873332 is about 1174.6713025351.

The spelling of 1620873332 in words is "one billion, six hundred twenty million, eight hundred seventy-three thousand, three hundred thirty-two".