1969966971 has 24 divisors (see below), whose sum is σ = 3253417440. Its totient is φ = 1125207936.

The previous prime is 1969966969. The next prime is 1969966991. The reversal of 1969966971 is 1796699691.

It is not a de Polignac number, because 1969966971 - 2¹ = 1969966969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 1969966899 and 1969966908.

It is not an unprimeable number, because it can be changed into a prime (1969966931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180745 + ... + 191333.

It is an arithmetic number, because the mean of its divisors is an integer number (135559060).

Almost surely, 2^1969966971 is an apocalyptic number.

1969966971 is a deficient number, since it is larger than the sum of its proper divisors (1283450469).

1969966971 is a wasteful number, since it uses less digits than its factorization.

1969966971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13555 (or 13552 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 63.

The square root of 1969966971 is about 44384.3099642205. The cubic root of 1969966971 is about 1253.5826755518.

The spelling of 1969966971 in words is "one billion, nine hundred sixty-nine million, nine hundred sixty-six thousand, nine hundred seventy-one".