1293985741 has 8 divisors (see below), whose sum is σ = 1315919000. Its totient is φ = 1272075840.

The previous prime is 1293985729. The next prime is 1293985757. The reversal of 1293985741 is 1475893921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72900 + 1293912841 = 270^2 + 35971^2 .

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 1293985741 - 2⁷ = 1293985613 is a prime.

It is a super-2 number, since 2×1293985741² = 3348798195822638162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293985711) 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, 133735 + ... + 143083.

It is an arithmetic number, because the mean of its divisors is an integer number (164489875).

Almost surely, 2^1293985741 is an apocalyptic number.

It is an amenable number.

1293985741 is a deficient number, since it is larger than the sum of its proper divisors (21933259).

1293985741 is an equidigital number, since it uses as much as digits as its factorization.

1293985741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11679.

The product of its digits is 544320, while the sum is 49.

The square root of 1293985741 is about 35972.0133020102. The cubic root of 1293985741 is about 1089.7072246245.

The spelling of 1293985741 in words is "one billion, two hundred ninety-three million, nine hundred eighty-five thousand, seven hundred forty-one".