1605051996 has 24 divisors (see below), whose sum is σ = 3772461840. Its totient is φ = 531111552.

The previous prime is 1605051983. The next prime is 1605051997. The reversal of 1605051996 is 6991505061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605051997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486511 + ... + 489798.

It is an arithmetic number, because the mean of its divisors is an integer number (157185910).

Almost surely, 2^1605051996 is an apocalyptic number.

It is an amenable number.

1605051996 is an abundant number, since it is smaller than the sum of its proper divisors (2167409844).

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

1605051996 is a wasteful number, since it uses less digits than its factorization.

1605051996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976453 (or 976451 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 1605051996 is about 40063.1001795917. The cubic root of 1605051996 is about 1170.8368124087.

The spelling of 1605051996 in words is "one billion, six hundred five million, fifty-one thousand, nine hundred ninety-six".