1284961197 has 48 divisors (see below), whose sum is σ = 1945847232. Its totient is φ = 749329920.

The previous prime is 1284961187. The next prime is 1284961207. The reversal of 1284961197 is 7911694821.

It is an interprime number because it is at equal distance from previous prime (1284961187) and next prime (1284961207).

It is not a de Polignac number, because 1284961197 - 2¹¹ = 1284959149 is a prime.

It is a super-2 number, since 2×1284961197² = 3302250555591345618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284961187) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2188738 + ... + 2189324.

It is an arithmetic number, because the mean of its divisors is an integer number (40538484).

Almost surely, 2^1284961197 is an apocalyptic number.

It is an amenable number.

1284961197 is a deficient number, since it is larger than the sum of its proper divisors (660886035).

1284961197 is a wasteful number, since it uses less digits than its factorization.

1284961197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 681 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 1284961197 is about 35846.3554214372. The cubic root of 1284961197 is about 1087.1680257151.

The spelling of 1284961197 in words is "one billion, two hundred eighty-four million, nine hundred sixty-one thousand, one hundred ninety-seven".