1241989733 has 2 divisors, whose sum is σ = 1241989734. Its totient is φ = 1241989732.

The previous prime is 1241989729. The next prime is 1241989751. The reversal of 1241989733 is 3379891421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1240307524 + 1682209 = 35218^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241989733 - 2² = 1241989729 is a prime.

It is a super-2 number, since 2×1241989733² = 3085076993754822578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241989703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620994866 + 620994867.

It is an arithmetic number, because the mean of its divisors is an integer number (620994867).

Almost surely, 2^1241989733 is an apocalyptic number.

It is an amenable number.

1241989733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241989733 is an equidigital number, since it uses as much as digits as its factorization.

1241989733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 1241989733 is about 35241.8747089311. The cubic root of 1241989733 is about 1074.9113993681.

The spelling of 1241989733 in words is "one billion, two hundred forty-one million, nine hundred eighty-nine thousand, seven hundred thirty-three".