1984954969 has 8 divisors (see below), whose sum is σ = 2102656968. Its totient is φ = 1867357440.

The previous prime is 1984954913. The next prime is 1984954981. The reversal of 1984954969 is 9694594891.

It can be written as a sum of positive squares in 4 ways, for example, as 171217225 + 1813737744 = 13085^2 + 42588^2 .

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 1984954969 - 2⁷ = 1984954841 is a prime.

It is a super-2 number, since 2×1984954969² = 7880092457915581922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1984954969.

It is not an unprimeable number, because it can be changed into a prime (1984954669) 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, 14859 + ... + 64735.

It is an arithmetic number, because the mean of its divisors is an integer number (262832121).

Almost surely, 2^1984954969 is an apocalyptic number.

It is an amenable number.

1984954969 is a deficient number, since it is larger than the sum of its proper divisors (117701999).

1984954969 is a wasteful number, since it uses less digits than its factorization.

1984954969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52235.

The product of its digits is 25194240, while the sum is 64.

The square root of 1984954969 is about 44552.8334564705. The cubic root of 1984954969 is about 1256.7538362218.

The spelling of 1984954969 in words is "one billion, nine hundred eighty-four million, nine hundred fifty-four thousand, nine hundred sixty-nine".