1641730964 has 12 divisors (see below), whose sum is σ = 2875320000. Its totient is φ = 820210968.

The previous prime is 1641730939. The next prime is 1641730973. The reversal of 1641730964 is 4690371461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157964 + ... + 168035.

It is an arithmetic number, because the mean of its divisors is an integer number (239610000).

Almost surely, 2^1641730964 is an apocalyptic number.

It is an amenable number.

1641730964 is a deficient number, since it is larger than the sum of its proper divisors (1233589036).

1641730964 is a wasteful number, since it uses less digits than its factorization.

1641730964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327262 (or 327260 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1641730964 is about 40518.2793810399. The cubic root of 1641730964 is about 1179.6884564876.

The spelling of 1641730964 in words is "one billion, six hundred forty-one million, seven hundred thirty thousand, nine hundred sixty-four".