1361341998 has 32 divisors (see below), whose sum is σ = 3122795520. Its totient is φ = 439142040.

The previous prime is 1361341991. The next prime is 1361342027. The reversal of 1361341998 is 8991431631.

1361341998 is a `hidden beast` number, since 13 + 613 + 4 + 19 + 9 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361341991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404940 + ... + 408287.

It is an arithmetic number, because the mean of its divisors is an integer number (97587360).

Almost surely, 2^1361341998 is an apocalyptic number.

1361341998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1361341998 is an abundant number, since it is smaller than the sum of its proper divisors (1761453522).

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

1361341998 is a wasteful number, since it uses less digits than its factorization.

1361341998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813269 (or 813263 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 1361341998 is about 36896.3683578750. The cubic root of 1361341998 is about 1108.2959536240.

It can be divided in two parts, 13613 and 41998, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 1361341998 in words is "one billion, three hundred sixty-one million, three hundred forty-one thousand, nine hundred ninety-eight".