1641430864 has 20 divisors (see below), whose sum is σ = 3199788256. Its totient is φ = 815679072.

The previous prime is 1641430849. The next prime is 1641430897. The reversal of 1641430864 is 4680341461.

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, 312084 + ... + 317299.

Almost surely, 2^1641430864 is an apocalyptic number.

It is an amenable number.

1641430864 is a deficient number, since it is larger than the sum of its proper divisors (1558357392).

1641430864 is a wasteful number, since it uses less digits than its factorization.

1641430864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629554 (or 629548 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 1641430864 is about 40514.5759449608. The cubic root of 1641430864 is about 1179.6165717743.

It can be divided in two parts, 16414 and 30864, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 1641430864 in words is "one billion, six hundred forty-one million, four hundred thirty thousand, eight hundred sixty-four".