1640101464 has 24 divisors (see below), whose sum is σ = 4441941660. Its totient is φ = 546700464.

The previous prime is 1640101453. The next prime is 1640101481. The reversal of 1640101464 is 4641010461.

1640101464 is a `hidden beast` number, since 1 + 640 + 1 + 0 + 14 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11389522 + ... + 11389665.

Almost surely, 2^1640101464 is an apocalyptic number.

It is an amenable number.

1640101464 is an abundant number, since it is smaller than the sum of its proper divisors (2801840196).

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

1640101464 is a wasteful number, since it uses less digits than its factorization.

1640101464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22779199 (or 22779192 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1640101464 is about 40498.1661807050. The cubic root of 1640101464 is about 1179.2980273762.

The spelling of 1640101464 in words is "one billion, six hundred forty million, one hundred one thousand, four hundred sixty-four".