1969216546 has 16 divisors (see below), whose sum is σ = 3232726848. Its totient is φ = 892217200.

The previous prime is 1969216517. The next prime is 1969216549. The reversal of 1969216546 is 6456129691.

It is a self number, because there is not a number n which added to its sum of digits gives 1969216546.

It is not an unprimeable number, because it can be changed into a prime (1969216549) 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, 137065 + ... + 150748.

It is an arithmetic number, because the mean of its divisors is an integer number (202045428).

Almost surely, 2^1969216546 is an apocalyptic number.

1969216546 is a deficient number, since it is larger than the sum of its proper divisors (1263510302).

1969216546 is a wasteful number, since it uses less digits than its factorization.

1969216546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288137.

The product of its digits is 699840, while the sum is 49.

The square root of 1969216546 is about 44375.8554396419. The cubic root of 1969216546 is about 1253.4234784233.

The spelling of 1969216546 in words is "one billion, nine hundred sixty-nine million, two hundred sixteen thousand, five hundred forty-six".