1368553698 has 64 divisors (see below), whose sum is σ = 3209587200. Its totient is φ = 431056080.

The previous prime is 1368553657. The next prime is 1368553699. The reversal of 1368553698 is 8963558631.

1368553698 is a `hidden beast` number, since 13 + 6 + 8 + 5 + 536 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1368553699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453013 + ... + 456023.

It is an arithmetic number, because the mean of its divisors is an integer number (50149800).

Almost surely, 2^1368553698 is an apocalyptic number.

1368553698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1368553698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604793600).

1368553698 is an abundant number, since it is smaller than the sum of its proper divisors (1841033502).

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

1368553698 is a wasteful number, since it uses less digits than its factorization.

1368553698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484 (or 3478 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 1368553698 is about 36993.9684002676. The cubic root of 1368553698 is about 1110.2495713477.

The spelling of 1368553698 in words is "one billion, three hundred sixty-eight million, five hundred fifty-three thousand, six hundred ninety-eight".