3698946381 has 16 divisors (see below), whose sum is σ = 5482641920. Its totient is φ = 2202845760.

The previous prime is 3698946379. The next prime is 3698946431. The reversal of 3698946381 is 1836498963.

It is a happy number.

It is not a de Polignac number, because 3698946381 - 2¹ = 3698946379 is a prime.

It is a super-2 number, since 2×3698946381² = 27364408659025994322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3698946311) 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, 1528546 + ... + 1530963.

It is an arithmetic number, because the mean of its divisors is an integer number (342665120).

Almost surely, 2^3698946381 is an apocalyptic number.

3698946381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3698946381 is a deficient number, since it is larger than the sum of its proper divisors (1783695539).

3698946381 is a wasteful number, since it uses less digits than its factorization.

3698946381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059556.

The product of its digits is 6718464, while the sum is 57.

The square root of 3698946381 is about 60818.9639915051. The cubic root of 3698946381 is about 1546.5335479579.

The spelling of 3698946381 in words is "three billion, six hundred ninety-eight million, nine hundred forty-six thousand, three hundred eighty-one".