1645612936 has 32 divisors (see below), whose sum is σ = 3376702080. Its totient is φ = 745633600.

The previous prime is 1645612919. The next prime is 1645612951. The reversal of 1645612936 is 6392165461.

It is a junction number, because it is equal to n+sod(n) for n = 1645612892 and 1645612901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600 + ... + 57391.

It is an arithmetic number, because the mean of its divisors is an integer number (105521940).

Almost surely, 2^1645612936 is an apocalyptic number.

It is an amenable number.

1645612936 is an abundant number, since it is smaller than the sum of its proper divisors (1731089144).

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

1645612936 is a wasteful number, since it uses less digits than its factorization.

1645612936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59325 (or 59321 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 1645612936 is about 40566.1550556619. The cubic root of 1645612936 is about 1180.6175394446.

It can be divided in two parts, 16456 and 12936, that added together give a palindrome (29392).

The spelling of 1645612936 in words is "one billion, six hundred forty-five million, six hundred twelve thousand, nine hundred thirty-six".