1609907029812 has 36 divisors (see below), whose sum is σ = 4069565267040. Its totient is φ = 536625383952.

The previous prime is 1609907029799. The next prime is 1609907029817. The reversal of 1609907029812 is 2189207099061.

1609907029812 is a `hidden beast` number, since 1 + 609 + 9 + 0 + 7 + 0 + 29 + 8 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609907029817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1606489 + ... + 2408447.

It is an arithmetic number, because the mean of its divisors is an integer number (113043479640).

Almost surely, 2^{1609907029812} is an apocalyptic number.

1609907029812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1609907029812 is an abundant number, since it is smaller than the sum of its proper divisors (2459658237228).

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

1609907029812 is a wasteful number, since it uses less digits than its factorization.

1609907029812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857732 (or 857727 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 1609907029812 in words is "one trillion, six hundred nine billion, nine hundred seven million, twenty-nine thousand, eight hundred twelve".