3698491968 has 224 divisors, whose sum is σ = 11548262400. Its totient is φ = 1157442048.

The previous prime is 3698491943. The next prime is 3698491969. The reversal of 3698491968 is 8691948963.

It is a happy number.

3698491968 is a `hidden beast` number, since 369 + 84 + 9 + 196 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3698491969) 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, 4169221 + ... + 4170107.

Almost surely, 2^3698491968 is an apocalyptic number.

3698491968 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3698491968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5774131200).

3698491968 is an abundant number, since it is smaller than the sum of its proper divisors (7849770432).

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

3698491968 is a wasteful number, since it uses less digits than its factorization.

3698491968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1038 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 3698491968 is about 60815.2280929703. The cubic root of 3698491968 is about 1546.4702151728.

The spelling of 3698491968 in words is "three billion, six hundred ninety-eight million, four hundred ninety-one thousand, nine hundred sixty-eight".