743000981 has 2 divisors, whose sum is σ = 743000982. Its totient is φ = 743000980.

The previous prime is 743000933. The next prime is 743001001. The reversal of 743000981 is 189000347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399640081 + 343360900 = 19991^2 + 18530^2 .

It is a cyclic number.

It is not a de Polignac number, because 743000981 - 2²⁶ = 675892117 is a prime.

It is a super-2 number, since 2×743000981² = 1104100915533924722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (743000081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371500490 + 371500491.

It is an arithmetic number, because the mean of its divisors is an integer number (371500491).

Almost surely, 2^743000981 is an apocalyptic number.

It is an amenable number.

743000981 is a deficient number, since it is larger than the sum of its proper divisors (1).

743000981 is an equidigital number, since it uses as much as digits as its factorization.

743000981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 743000981 is about 27258.0443355718. The cubic root of 743000981 is about 905.7252231487.

The spelling of 743000981 in words is "seven hundred forty-three million, nine hundred eighty-one", and thus it is an aban number.