1620463285 has 16 divisors (see below), whose sum is σ = 2282414976. Its totient is φ = 1081142208.

The previous prime is 1620463283. The next prime is 1620463289. The reversal of 1620463285 is 5823640261.

It is a cyclic number.

It is not a de Polignac number, because 1620463285 - 2¹ = 1620463283 is a prime.

It is a super-3 number, since 3×1620463285³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620463283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624367 + ... + 626956.

It is an arithmetic number, because the mean of its divisors is an integer number (142650936).

Almost surely, 2^1620463285 is an apocalyptic number.

It is an amenable number.

1620463285 is a deficient number, since it is larger than the sum of its proper divisors (661951691).

1620463285 is a wasteful number, since it uses less digits than its factorization.

1620463285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251372.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1620463285 is about 40254.9783877721. The cubic root of 1620463285 is about 1174.5722384364.

The spelling of 1620463285 in words is "one billion, six hundred twenty million, four hundred sixty-three thousand, two hundred eighty-five".