4013903808 has 140 divisors (see below), whose sum is σ = 12282781632. Its totient is φ = 1294755840.

The previous prime is 4013903807. The next prime is 4013903809. The reversal of 4013903808 is 8083093104.

It is an interprime number because it is at equal distance from previous prime (4013903807) and next prime (4013903809).

It is a super-2 number, since 2×4013903808² = 32222847559753801728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013903807) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 148216 + ... + 173192.

Almost surely, 2^4013903808 is an apocalyptic number.

4013903808 is a gapful number since it is divisible by the number (48) 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 4013903808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6141390816).

4013903808 is an abundant number, since it is smaller than the sum of its proper divisors (8268877824).

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

4013903808 is a wasteful number, since it uses less digits than its factorization.

4013903808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25032 (or 25013 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 4013903808 is about 63355.3771040785. The cubic root of 4013903808 is about 1589.2381683206.

The spelling of 4013903808 in words is "four billion, thirteen million, nine hundred three thousand, eight hundred eight".