1646428171630 has 32 divisors (see below), whose sum is σ = 3233234683008. Its totient is φ = 598655143200.

The previous prime is 1646428171603. The next prime is 1646428171631. The reversal of 1646428171630 is 361718246461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646428171631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879385 + ... + 2016475.

It is an arithmetic number, because the mean of its divisors is an integer number (101038583844).

Almost surely, 2^{1646428171630} is an apocalyptic number.

1646428171630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1646428171630 is a deficient number, since it is larger than the sum of its proper divisors (1586806511378).

1646428171630 is a wasteful number, since it uses less digits than its factorization.

1646428171630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150272.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 1646428171630 in words is "one trillion, six hundred forty-six billion, four hundred twenty-eight million, one hundred seventy-one thousand, six hundred thirty".