1640550932 has 24 divisors (see below), whose sum is σ = 3091374720. Its totient is φ = 758936960.

The previous prime is 1640550929. The next prime is 1640550959. The reversal of 1640550932 is 2390550461.

It is a junction number, because it is equal to n+sod(n) for n = 1640550892 and 1640550901.

It is a congruent number.

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, 200444 + ... + 208467.

It is an arithmetic number, because the mean of its divisors is an integer number (128807280).

Almost surely, 2^1640550932 is an apocalyptic number.

It is an amenable number.

1640550932 is a deficient number, since it is larger than the sum of its proper divisors (1450823788).

1640550932 is a wasteful number, since it uses less digits than its factorization.

1640550932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408991 (or 408989 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1640550932 is about 40503.7150394874. The cubic root of 1640550932 is about 1179.4057459786.

The spelling of 1640550932 in words is "one billion, six hundred forty million, five hundred fifty thousand, nine hundred thirty-two".