1363681051 has 4 divisors (see below), whose sum is σ = 1379003400. Its totient is φ = 1348358704.

The previous prime is 1363681021. The next prime is 1363681057. The reversal of 1363681051 is 1501863631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1501863631 = 647 ⋅2321273.

It is a cyclic number.

It is not a de Polignac number, because 1363681051 - 2¹⁹ = 1363156763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1363680998 and 1363681016.

It is not an unprimeable number, because it can be changed into a prime (1363681057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7661041 + ... + 7661218.

It is an arithmetic number, because the mean of its divisors is an integer number (344750850).

Almost surely, 2^1363681051 is an apocalyptic number.

1363681051 is a deficient number, since it is larger than the sum of its proper divisors (15322349).

1363681051 is an equidigital number, since it uses as much as digits as its factorization.

1363681051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15322348.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1363681051 is about 36928.0523586067. The cubic root of 1363681051 is about 1108.9303471526.

The spelling of 1363681051 in words is "one billion, three hundred sixty-three million, six hundred eighty-one thousand, fifty-one".