1620512632 has 16 divisors (see below), whose sum is σ = 3043081800. Its totient is φ = 809024160.

The previous prime is 1620512627. The next prime is 1620512639. The reversal of 1620512632 is 2362150261.

It is a super-2 number, since 2×1620512632² = 5252122380943134848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1620512632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620512639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148419 + ... + 158962.

Almost surely, 2^1620512632 is an apocalyptic number.

It is an amenable number.

1620512632 is a deficient number, since it is larger than the sum of its proper divisors (1422569168).

1620512632 is a wasteful number, since it uses less digits than its factorization.

1620512632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308046 (or 308042 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1620512632 is about 40255.5913135058. The cubic root of 1620512632 is about 1174.5841611642.

Adding to 1620512632 its reverse (2362150261), we get a palindrome (3982662893).

The spelling of 1620512632 in words is "one billion, six hundred twenty million, five hundred twelve thousand, six hundred thirty-two".