1146213997 has 2 divisors, whose sum is σ = 1146213998. Its totient is φ = 1146213996.

The previous prime is 1146213961. The next prime is 1146214049. The reversal of 1146213997 is 7993126411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101310596 + 44903401 = 33186^2 + 6701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146213997 - 2¹⁹ = 1145689709 is a prime.

It is a super-3 number, since 3×1146213997³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146213907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573106998 + 573106999.

It is an arithmetic number, because the mean of its divisors is an integer number (573106999).

Almost surely, 2^1146213997 is an apocalyptic number.

It is an amenable number.

1146213997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146213997 is an equidigital number, since it uses as much as digits as its factorization.

1146213997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 1146213997 is about 33855.7823273957. The cubic root of 1146213997 is about 1046.5385628419.

The spelling of 1146213997 in words is "one billion, one hundred forty-six million, two hundred thirteen thousand, nine hundred ninety-seven".