1363798420 has 24 divisors (see below), whose sum is σ = 2874327624. Its totient is φ = 543547776.

The previous prime is 1363798417. The next prime is 1363798427. The reversal of 1363798420 is 248973631.

It can be written as a sum of positive squares in 4 ways, for example, as 93161104 + 1270637316 = 9652^2 + 35646^2 .

It is a super-2 number, since 2×1363798420² = 3719892260788992800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363798427) 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, 117547 + ... + 128626.

It is an arithmetic number, because the mean of its divisors is an integer number (119763651).

Almost surely, 2^1363798420 is an apocalyptic number.

1363798420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1363798420 is an abundant number, since it is smaller than the sum of its proper divisors (1510529204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1363798420 is a wasteful number, since it uses less digits than its factorization.

1363798420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246459 (or 246457 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1363798420 is about 36929.6414821482. The cubic root of 1363798420 is about 1108.9621606308.

The spelling of 1363798420 in words is "one billion, three hundred sixty-three million, seven hundred ninety-eight thousand, four hundred twenty".