1651604012 has 24 divisors (see below), whose sum is σ = 2930059776. Its totient is φ = 814520448.

The previous prime is 1651604011. The next prime is 1651604063. The reversal of 1651604012 is 2104061561.

It is a super-2 number, since 2×1651604012² = 5455591624908992288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1651604011) 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, 78488 + ... + 97280.

It is an arithmetic number, because the mean of its divisors is an integer number (122085824).

Almost surely, 2^1651604012 is an apocalyptic number.

It is an amenable number.

1651604012 is a deficient number, since it is larger than the sum of its proper divisors (1278455764).

1651604012 is a wasteful number, since it uses less digits than its factorization.

1651604012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19097 (or 19095 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1651604012 is about 40639.9312499418. The cubic root of 1651604012 is about 1182.0485367670.

Adding to 1651604012 its reverse (2104061561), we get a palindrome (3755665573).

The spelling of 1651604012 in words is "one billion, six hundred fifty-one million, six hundred four thousand, twelve".