1969966973 has 8 divisors (see below), whose sum is σ = 2122003800. Its totient is φ = 1818001728.

The previous prime is 1969966969. The next prime is 1969966991. The reversal of 1969966973 is 3796699691.

It can be written as a sum of positive squares in 4 ways, for example, as 133587364 + 1836379609 = 11558^2 + 42853^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1969966973 - 2² = 1969966969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969966993) 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, 48383 + ... + 79251.

It is an arithmetic number, because the mean of its divisors is an integer number (265250475).

Almost surely, 2^1969966973 is an apocalyptic number.

1969966973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1969966973 is a deficient number, since it is larger than the sum of its proper divisors (152036827).

1969966973 is a wasteful number, since it uses less digits than its factorization.

1969966973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35791.

The product of its digits is 29760696, while the sum is 65.

The square root of 1969966973 is about 44384.3099867509. The cubic root of 1969966973 is about 1253.5826759760.

The spelling of 1969966973 in words is "one billion, nine hundred sixty-nine million, nine hundred sixty-six thousand, nine hundred seventy-three".