1641623312 has 40 divisors (see below), whose sum is σ = 3636945792. Its totient is φ = 703180800.

The previous prime is 1641623303. The next prime is 1641623371. The reversal of 1641623312 is 2133261461.

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, 364112 + ... + 368592.

Almost surely, 2^1641623312 is an apocalyptic number.

It is an amenable number.

1641623312 is an abundant number, since it is smaller than the sum of its proper divisors (1995322480).

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

1641623312 is a wasteful number, since it uses less digits than its factorization.

1641623312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7767 (or 7761 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 1641623312 is about 40516.9509218056. The cubic root of 1641623312 is about 1179.6626709803.

Adding to 1641623312 its reverse (2133261461), we get a palindrome (3774884773).

The spelling of 1641623312 in words is "one billion, six hundred forty-one million, six hundred twenty-three thousand, three hundred twelve".