1620633464 has 16 divisors (see below), whose sum is σ = 3056886000. Its totient is φ = 805463872.

The previous prime is 1620633463. The next prime is 1620633467. The reversal of 1620633464 is 4643360261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620633463) 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, 605189 + ... + 607860.

It is an arithmetic number, because the mean of its divisors is an integer number (191055375).

Almost surely, 2^1620633464 is an apocalyptic number.

It is an amenable number.

1620633464 is a deficient number, since it is larger than the sum of its proper divisors (1436252536).

1620633464 is a wasteful number, since it uses less digits than its factorization.

1620633464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213222 (or 1213218 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 1620633464 is about 40257.0920956792. The cubic root of 1620633464 is about 1174.6133543597.

The spelling of 1620633464 in words is "one billion, six hundred twenty million, six hundred thirty-three thousand, four hundred sixty-four".