1616425632 has 60 divisors (see below), whose sum is σ = 4753870506. Its totient is φ = 538807680.

The previous prime is 1616425621. The next prime is 1616425639. The reversal of 1616425632 is 2365246161.

1616425632 is a `hidden beast` number, since 1 + 6 + 1 + 642 + 5 + 6 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 983198736 + 633226896 = 31356^2 + 25164^2 .

It is a super-2 number, since 2×1616425632² = 5225663647573198848, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1616425639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 309219 + ... + 314402.

Almost surely, 2^1616425632 is an apocalyptic number.

1616425632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1616425632 is an abundant number, since it is smaller than the sum of its proper divisors (3137444874).

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

1616425632 is an equidigital number, since it uses as much as digits as its factorization.

1616425632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623643 (or 623626 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1616425632 is about 40204.7961318050. The cubic root of 1616425632 is about 1173.5958798957.

The spelling of 1616425632 in words is "one billion, six hundred sixteen million, four hundred twenty-five thousand, six hundred thirty-two".