1968163604 has 12 divisors (see below), whose sum is σ = 3757403328. Its totient is φ = 894619800.

The previous prime is 1968163591. The next prime is 1968163609. The reversal of 1968163604 is 4063618691.

It is a happy number.

It is a super-2 number, since 2×1968163604² = 7747335944220537632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 44730991 = 1968163604 / (1 + 9 + 6 + 8 + 1 + 6 + 3 + 6 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968163609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22365452 + ... + 22365539.

It is an arithmetic number, because the mean of its divisors is an integer number (313116944).

Almost surely, 2^1968163604 is an apocalyptic number.

It is an amenable number.

1968163604 is a deficient number, since it is larger than the sum of its proper divisors (1789239724).

1968163604 is a wasteful number, since it uses less digits than its factorization.

1968163604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44731006 (or 44731004 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1968163604 is about 44363.9899468026. The cubic root of 1968163604 is about 1253.2000363432.

The spelling of 1968163604 in words is "one billion, nine hundred sixty-eight million, one hundred sixty-three thousand, six hundred four".