1290181361 has 8 divisors (see below), whose sum is σ = 1474752384. Its totient is φ = 1105675200.

The previous prime is 1290181351. The next prime is 1290181363. The reversal of 1290181361 is 1631810921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1290181361 - 2²² = 1285987057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290181363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38921 + ... + 63993.

It is an arithmetic number, because the mean of its divisors is an integer number (184344048).

Almost surely, 2^1290181361 is an apocalyptic number.

It is an amenable number.

1290181361 is a deficient number, since it is larger than the sum of its proper divisors (184571023).

1290181361 is an equidigital number, since it uses as much as digits as its factorization.

1290181361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32431.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1290181361 is about 35919.0946572989. The cubic root of 1290181361 is about 1088.6382458607.

The spelling of 1290181361 in words is "one billion, two hundred ninety million, one hundred eighty-one thousand, three hundred sixty-one".