4181640528 has 40 divisors (see below), whose sum is σ = 11633540128. Its totient is φ = 1286658432.

The previous prime is 4181640497. The next prime is 4181640559. The reversal of 4181640528 is 8250461814.

It is an interprime number because it is at equal distance from previous prime (4181640497) and next prime (4181640559).

It is a super-2 number, since 2×4181640528² = 34972235010824237568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350050 + ... + 3351297.

Almost surely, 2^4181640528 is an apocalyptic number.

4181640528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4181640528 is an abundant number, since it is smaller than the sum of its proper divisors (7451899600).

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

4181640528 is a wasteful number, since it uses less digits than its factorization.

4181640528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701371 (or 6701365 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 4181640528 is about 64665.6054483371. The cubic root of 4181640528 is about 1611.0742837245.

The spelling of 4181640528 in words is "four billion, one hundred eighty-one million, six hundred forty thousand, five hundred twenty-eight".