1646361340 has 24 divisors (see below), whose sum is σ = 3723310080. Its totient is φ = 607887168.

The previous prime is 1646361281. The next prime is 1646361377. The reversal of 1646361340 is 431636461.

It is a junction number, because it is equal to n+sod(n) for n = 1646361296 and 1646361305.

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, 3165820 + ... + 3166339.

It is an arithmetic number, because the mean of its divisors is an integer number (155137920).

Almost surely, 2^1646361340 is an apocalyptic number.

1646361340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1646361340 is an abundant number, since it is smaller than the sum of its proper divisors (2076948740).

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

1646361340 is a wasteful number, since it uses less digits than its factorization.

1646361340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332181 (or 6332179 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1646361340 is about 40575.3784948459. The cubic root of 1646361340 is about 1180.7964889729.

The spelling of 1646361340 in words is "one billion, six hundred forty-six million, three hundred sixty-one thousand, three hundred forty".