1641623960 has 32 divisors (see below), whose sum is σ = 3728183760. Its totient is φ = 650510976.

The previous prime is 1641623953. The next prime is 1641623987. The reversal of 1641623960 is 693261461.

1641623960 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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, 187499 + ... + 196058.

Almost surely, 2^1641623960 is an apocalyptic number.

1641623960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641623960 is an abundant number, since it is smaller than the sum of its proper divisors (2086559800).

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

1641623960 is a wasteful number, since it uses less digits than its factorization.

1641623960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383675 (or 383671 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 1641623960 is about 40516.9589184578. The cubic root of 1641623960 is about 1179.6628261968.

The spelling of 1641623960 in words is "one billion, six hundred forty-one million, six hundred twenty-three thousand, nine hundred sixty".