1293736081 has 8 divisors (see below), whose sum is σ = 1460016000. Its totient is φ = 1135567440.

The previous prime is 1293736079. The next prime is 1293736123. The reversal of 1293736081 is 1806373921.

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 1293736081 - 2¹ = 1293736079 is a prime.

It is a super-2 number, since 2×1293736081² = 3347506094562477122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1293736001) 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, 2027481 + ... + 2028118.

It is an arithmetic number, because the mean of its divisors is an integer number (182502000).

Almost surely, 2^1293736081 is an apocalyptic number.

1293736081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1293736081 is a deficient number, since it is larger than the sum of its proper divisors (166279919).

1293736081 is a wasteful number, since it uses less digits than its factorization.

1293736081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055639.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1293736081 is about 35968.5429368497. The cubic root of 1293736081 is about 1089.6371378645.

The spelling of 1293736081 in words is "one billion, two hundred ninety-three million, seven hundred thirty-six thousand, eighty-one".