1620463284 has 36 divisors (see below), whose sum is σ = 4468551360. Its totient is φ = 491049360.

The previous prime is 1620463283. The next prime is 1620463289. The reversal of 1620463284 is 4823640261.

1620463284 is a `hidden beast` number, since 1 + 620 + 4 + 6 + 3 + 28 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 2045644 + ... + 2046435.

Almost surely, 2^1620463284 is an apocalyptic number.

It is an amenable number.

1620463284 is an abundant number, since it is smaller than the sum of its proper divisors (2848088076).

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

1620463284 is a wasteful number, since it uses less digits than its factorization.

1620463284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092100 (or 4092095 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1620463284 is about 40254.9783753513. The cubic root of 1620463284 is about 1174.5722381948.

The spelling of 1620463284 in words is "one billion, six hundred twenty million, four hundred sixty-three thousand, two hundred eighty-four".