1361406653 has 8 divisors (see below), whose sum is σ = 1438318080. Its totient is φ = 1286493040.

The previous prime is 1361406623. The next prime is 1361406659. The reversal of 1361406653 is 3566041631.

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 1361406653 - 2²² = 1357212349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361406659) 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, 498053 + ... + 500778.

It is an arithmetic number, because the mean of its divisors is an integer number (179789760).

Almost surely, 2^1361406653 is an apocalyptic number.

It is an amenable number.

1361406653 is a deficient number, since it is larger than the sum of its proper divisors (76911427).

1361406653 is an equidigital number, since it uses as much as digits as its factorization.

1361406653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998907.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1361406653 is about 36897.2445177143. The cubic root of 1361406653 is about 1108.3134989924.

The spelling of 1361406653 in words is "one billion, three hundred sixty-one million, four hundred six thousand, six hundred fifty-three".