1361156598 has 24 divisors (see below), whose sum is σ = 2978376336. Its totient is φ = 449226000.

The previous prime is 1361156593. The next prime is 1361156647. The reversal of 1361156598 is 8956511631.

1361156598 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 1 + 56 + 598 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361156593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372538 + ... + 376173.

It is an arithmetic number, because the mean of its divisors is an integer number (124099014).

Almost surely, 2^1361156598 is an apocalyptic number.

1361156598 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1361156598 is an abundant number, since it is smaller than the sum of its proper divisors (1617219738).

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

1361156598 is a wasteful number, since it uses less digits than its factorization.

1361156598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748820 (or 748817 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 1361156598 is about 36893.8558299346. The cubic root of 1361156598 is about 1108.2456387145.

The spelling of 1361156598 in words is "one billion, three hundred sixty-one million, one hundred fifty-six thousand, five hundred ninety-eight".