1609464642 has 8 divisors (see below), whose sum is σ = 3218929296. Its totient is φ = 536488212.

The previous prime is 1609464601. The next prime is 1609464667. The reversal of 1609464642 is 2464649061.

It is a sphenic number, since it is the product of 3 distinct primes.

1609464642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1609464594 and 1609464603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134122048 + ... + 134122059.

It is an arithmetic number, because the mean of its divisors is an integer number (402366162).

Almost surely, 2^1609464642 is an apocalyptic number.

1609464642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1609464642 is a wasteful number, since it uses less digits than its factorization.

1609464642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268244112.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 1609464642 is about 40118.1335807138. The cubic root of 1609464642 is about 1171.9087944999.

The spelling of 1609464642 in words is "one billion, six hundred nine million, four hundred sixty-four thousand, six hundred forty-two".